Let’s postulate that she is a cook.

我们假定她一位厨师。

Let's suppose (that) the news is true.

让我们假定这消息真的。

Let us presuppose that he wins the game.

让我们先假定他赢得这场比赛。

A scientist never presupposes the truth of an unproved fact.

科学家从不预先假定未经证实的事实。

I gambled that they wouldn't shoot.

我大胆假定他们不开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先，我们在一些假定下证明OLS估计量的无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正如所提到的那样，某些燃素减轻（轻率）的假定。

These are all perhapses.

这全假定。

Your assumption is wrong.

你的假定错的。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，重新估价当今资本市场理论的背后的假定十分重要的。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首先，假定多胞型不确定参数存在于状态空间模型的系统矩阵、输入矩阵和量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，以假定能发生随机交配和自花受精而不成为严重问题为依据的。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，假定农民们在春天不耕土地，不播种籽，不修剪果树，什么都不干，那么现在出现什么结果呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

如果一种语言理所当然地假定一切应以的男性、或者男性的观点为规范标准，这种语言就性别歧视的语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有比说他“以假定作为论据进行诡辨”更能使赫利多姆生气的事了，因为他惯以逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需假定结构零状态几何,而可以一次得到对应于初状态(即预应力态)几何的结构施工放样尺寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以这些回归模型的拟合方法中，通常假定模型的误差等方差的。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，假定网拍在接触点下面一呎，只向前和向挥拍, 如此网拍将自然地在接触中变成垂直，假设你从肩膀挥拍而且不太用到手腕的话。

Let’s postulate that she is a cook.

我们假定她一位厨师。

Let's suppose (that) the news is true.

让我们假定这消息真的。

Let us presuppose that he wins the game.

让我们先假定他赢得这场。

A scientist never presupposes the truth of an unproved fact.

学家从预先假定未经证实的事实。

I gambled that they wouldn't shoot.

我大胆假定他们会开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先，我们在一些假定下证明OLS估计量的无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正如所提到的那样，某些燃素会减轻（轻率）的假定。

These are all perhapses.

这全假定。

Your assumption is wrong.

你的假定错的。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，重新估价当今资本市场理论的背后的假定十分重要的。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首先，假定多胞型确定参数存在于状态空间模型的系统矩阵、输入矩阵和量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，以假定能发生随机交配和自花受精而会成为严重问题为依据的。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，假定农民们在春天耕土地，播种，剪果树，什么都干，那么现在会出现什么结果呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

如果一种语言理所当然地假定一切应以社会上的男性、或者社会上男性的观点为规范标准，这种语言就性别歧视的语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有说他“以假定作为论据进行诡辨”更能使赫利多姆生气的事了，因为他惯以逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需假定结构零状态几何,而可以一次得到对应于初状态(即预应力态)几何的结构施工放样尺寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以上这些回归模型的拟合方法中，通常假定模型的误差等方差的。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，假定网拍在接触点下面一呎，只向前和向上挥拍, 如此网拍将自然地在接触中变成垂直，假设你从肩膀挥拍而且太用到手腕的话。

Let’s postulate that she is a cook.

我们定她一位厨师。

Let's suppose (that) the news is true.

让我们定这消息真。

Let us presuppose that he wins the game.

让我们先定他赢得这场比赛。

A scientist never presupposes the truth of an unproved fact.

科学家从不预先定未经证实事实。

I gambled that they wouldn't shoot.

我大胆定他们不会开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先，我们在一些定下证明OLS估计量无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正如所提到那样，某些燃素会减轻（轻率）定。

These are all perhapses.

这全定。

Your assumption is wrong.

你定错。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，新估价当今资本市场理论背定十。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首先，定多胞型不确定参数存在于状态空间模型系统矩阵、输入矩阵和量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，以定能发生随机交配和自花受精而不会成为严问题为依据。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，定农民们在春天不耕土地，不播种籽，不修剪果树，什么都不干，那么现在会出现什么结果呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

如果一种语言理所当然地定一切应以社会上男性、或者社会上男性观点为规范标准，这种语言就性别歧视语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有比说他“以定作为论据进行诡辨”更能使赫利多姆生气事了，因为他惯以逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需定结构零状态几何,而可以一次得到对应于初状态(即预应力态)几何结构施工放样尺寸(即零状态几何),并通过级加载对该方法精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以上这些回归模型拟合方法中，通常定模型误差等方差。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，定网拍在接触点下面一呎，只向前和向上挥拍, 如此网拍将自然地在接触中变成垂直，设你从肩膀挥拍而且不太用到手腕话。

Let’s postulate that she is a cook.

我们假定她一位厨师。

Let's suppose (that) the news is true.

让我们假定这消息真的。

Let us presuppose that he wins the game.

让我们先假定他赢得这场比赛。

A scientist never presupposes the truth of an unproved fact.

科学家从不预先假定未经证实的事实。

I gambled that they wouldn't shoot.

我大胆假定他们不开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先，我们在一些假定下证明OLS估计量的无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正如所提到的那样，某些燃素减轻（轻率）的假定。

These are all perhapses.

这全假定。

Your assumption is wrong.

你的假定错的。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，重新估价当今资本市场理论的背后的假定十分重要的。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首先，假定多胞型不确定参数存在于状态空间模型的系统矩阵、输入矩阵和量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，假定能发生随机交配和自花受精而不成为严重问题为依据的。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，假定农民们在春天不耕土地，不播种籽，不修剪果树，什么都不干，那么现在出现什么结果呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

如果一种语言理所当然地假定一切应上的男性、或者上男性的观点为规范标准，这种语言就性别歧视的语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有比说他“假定作为论据进行诡辨”更能使赫利多姆生气的事了，因为他惯逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需假定结构零状态几何,而可一次得到对应于初状态(即预应力态)几何的结构施工放样尺寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在上这些回归模型的拟合方法中，通常假定模型的误差等方差的。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，假定网拍在接触点下面一呎，只向前和向上挥拍, 如此网拍将自然地在接触中变成垂直，假设你从肩膀挥拍而且不太用到手腕的话。

Let’s postulate that she is a cook.

我们她一位厨师。

Let's suppose (that) the news is true.

让我们这消息真的。

Let us presuppose that he wins the game.

让我们他赢得这场比赛。

A scientist never presupposes the truth of an unproved fact.

科学家从预未经证实的事实。

I gambled that they wouldn't shoot.

我大胆他们会开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首，我们在一些下证明OLS估计量的无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正如所提到的那样，某些燃素会减轻（轻率）的。

These are all perhapses.

这全。

Your assumption is wrong.

你的错的。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，重新估价当今资本市场理论的背后的十分重要的。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首，多胞型确参数存在于状态空间模型的系统矩阵、输入矩阵和量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，以能发生随机交配和自花受精而会成为严重问题为依据的。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，农民们在春天耕土地，播种籽，修剪果树，什么，那么现在会出现什么结果呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

如果一种语言理所当然地一切应以社会上的男性、或者社会上男性的观点为规范标准，这种语言就性别歧视的语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有比说他“以作为论据进行诡辨”更能使赫利多姆生气的事了，因为他惯以逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需结构零状态几何,而可以一次得到对应于初状态(即预应力态)几何的结构施工放样尺寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以上这些回归模型的拟合方法中，通常模型的误差等方差的。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，网拍在接触点下面一呎，只向前和向上挥拍, 如此网拍将自然地在接触中变成垂直，设你从肩膀挥拍而且太用到手腕的话。

Let’s postulate that she is a cook.

我们假定她一位厨师。

Let's suppose (that) the news is true.

让我们假定这消息真的。

Let us presuppose that he wins the game.

让我们先假定他赢得这场比赛。

A scientist never presupposes the truth of an unproved fact.

科学家从不预先假定未经证实的事实。

I gambled that they wouldn't shoot.

我大胆假定他们不会开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先，我们在一些假定下证明OLS估计量的无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正如所的那样，某些燃素会减轻（轻率）的假定。

These are all perhapses.

这全假定。

Your assumption is wrong.

你的假定错的。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，重新估价当今资本市场论的背后的假定十分重要的。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首先，假定多胞型不确定参数存在于状态空间模型的系统矩阵、输入矩阵和量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种论，以假定能发生随机交配和自花受精而不会成为严重问题为依据的。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，假定农民们在春天不耕土地，不播种籽，不修剪果树，什么都不干，那么现在会出现什么结果呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

如果一种语言所当然地假定一切应以社会上的男性、或者社会上男性的观点为规范标准，这种语言就性别歧视的语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有比说他“以假定作为论据进行诡辨”更能使赫利多姆生气的事了，因为他惯以逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需假定结构零状态几何,而可以一次得对应于初状态(即预应力态)几何的结构施工放样尺寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以上这些回归模型的拟合方法中，通常假定模型的误差等方差的。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，假定网拍在接触点下面一呎，只向前和向上挥拍, 如此网拍将自然地在接触中变成垂直，假设你从肩膀挥拍而且不太用手腕的话。

Let’s postulate that she is a cook.

我们她一位厨师。

Let's suppose (that) the news is true.

让我们这消息真的。

Let us presuppose that he wins the game.

让我们他赢得这场比赛。

A scientist never presupposes the truth of an unproved fact.

科学家从预未经证实的事实。

I gambled that they wouldn't shoot.

我大胆他们会开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首，我们在一些下证明OLS估计量的无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正如所提到的那样，某些燃素会减轻（轻率）的。

These are all perhapses.

这全。

Your assumption is wrong.

你的错的。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，重新估价当今资本市场理论的背后的十分重要的。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首，多胞型确参数存在于状态空间模型的系统矩阵、输入矩阵和量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，以能发生随机交配和自花受精而会成为严重问题为依据的。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，农民们在春天耕土地，播种籽，修剪果树，什么，那么现在会出现什么结果呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

如果一种语言理所当然地一切应以社会上的男性、或者社会上男性的观点为规范标准，这种语言就性别歧视的语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有比说他“以作为论据进行诡辨”更能使赫利多姆生气的事了，因为他惯以逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需结构零状态几何,而可以一次得到对应于初状态(即预应力态)几何的结构施工放样尺寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以上这些回归模型的拟合方法中，通常模型的误差等方差的。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，网拍在接触点下面一呎，只向前和向上挥拍, 如此网拍将自然地在接触中变成垂直，设你从肩膀挥拍而且太用到手腕的话。

Let’s postulate that she is a cook.

们假定她位厨。

Let's suppose (that) the news is true.

们假定这消息真的。

Let us presuppose that he wins the game.

们先假定他赢得这场比赛。

A scientist never presupposes the truth of an unproved fact.

科学家从不预先假定未经证实的事实。

I gambled that they wouldn't shoot.

大胆假定他们不会开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先，们在些假定下证明OLS估计量的无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正所提到的那样，某些燃素会减轻（轻率）的假定。

These are all perhapses.

这全假定。

Your assumption is wrong.

你的假定错的。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，重新估价当今资本市场理论的背后的假定十分重要的。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首先，假定多胞型不确定参数存在于状态空间模型的系统矩阵、输入矩阵和量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，以假定能发生随机交配和自花受精而不会成为严重问题为依据的。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，假定农民们在春天不耕土地，不播种籽，不修剪树，什么都不干，那么现在会出现什么结呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

种语言理所当然地假定切应以社会上的男性、或者社会上男性的观点为规范标准，这种语言就性别歧视的语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有比说他“以假定作为论据进行诡辨”更能使赫利多姆生气的事了，因为他惯以逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需假定结构零状态几何,而可以次得到对应于初状态(即预应力态)几何的结构施工放样尺寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以上这些回归模型的拟合方法中，通常假定模型的误差等方差的。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，假定网拍在接触点下面呎，只向前和向上挥拍, 此网拍将自然地在接触中变成垂直，假设你从肩膀挥拍而且不太用到手腕的话。

Let’s postulate that she is a cook.

我们假她一位厨师。

Let's suppose (that) the news is true.

让我们假这消息真的。

Let us presuppose that he wins the game.

让我们先假他赢得这场比赛。

A scientist never presupposes the truth of an unproved fact.

科学家从不预先假未经实的事实。

I gambled that they wouldn't shoot.

我大胆假他们不会开枪。

We begin by establishing the unbiasedness of OLS estimators under a set of assumptions.

首先，我们在一些假明OLS估计量的无偏性。

(a) As has been mentioned, some postulated that phlogiston has negative weight (levity).

(a) 正如所提到的那样，某些燃素会减轻（轻率）的假。

These are all perhapses.

这全假。

Your assumption is wrong.

你的假错的。

So it is very indispensable to revaluate the rear hypothesis of the present capital market theory.

因此，重新估价当今资本市场理论的背后的假十分重要的。

First, it is assumed that the polytope exists in the system matrix, input matrix and measure matrix of the stale space model.

首先，假多胞型不确参数存在于状态空间模型的系统矩阵、输入矩阵量测矩阵中。

Most seed orchard theory is based on the assumption that panmixis will occur and that selfing will not be a serious problem.

大多数关于种子园理论，以假能发生随机自花受精而不会成为严重问题为依据的。

But suppose in spring the farmer had left the toil unturned,the seed unsown,the trees untrimmed,and everything neglected,what would now be the result?

但，假农民们在春天不耕土地，不播种籽，不修剪果树，什么都不干，那么现在会出现什么结果呢？

It may trivialise, demean, irritate or insult women.Research evidence shows that language use affects the ways in which people view themselves and others.

如果一种语言理所当然地假一切应以社会上的男性、或者社会上男性的观点为规范标准，这种语言就性别歧视的语言。

Nothing was more calculated to annoy Halidome than to tell him he was"begging the question", for he prided himself on being strong in logic.

没有比说他“以假作为论据进行诡辨”更能使赫利多姆生气的事了，因为他惯以逻辑强为自豪。

Without assuming the form of unstrained state,the form of unstrained state corresponding to that of pre-stressed state can be obtained through this method directly.

该方法无需假结构零状态几何,而可以一次得到对应于初状态(即预应力态)几何的结构施工放样尺寸(即零状态几何),并通过分级加载对该方法的精度进行了检验。

In the fitting methods of both the ordinary nonparametric regression models and the varying coefficient regression models, the error term of the models is usually assumed to be homoscedastic.

在以上这些回归模型的拟合方法中，通常假模型的误差等方差的。

From this point simply swing forward and up and the racquet will naturally become vertical at contact, provided that you swing from the shoulders and do not get too wristy.

从这点，假网拍在接触点面一呎，只向前向上挥拍, 如此网拍将自然地在接触中变成垂直，假设你从肩膀挥拍而且不太用到手腕的话。