Pat rolled the trolley to and fro.

帕特来回推着手推车。

Those boats are prepared for waftage to and fro.

那些船舶是准备用来来回运送货物的。

They travel to and fro between London and Paris.

走于伦敦和巴黎之间。

Wilkie watched the to and fro of their dancing.

威尔基看着来来回回地舞。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

介绍DHEA的另一种提方法,从红薯废料———薯渣中提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

在一种大幅度的侧身跃动（）中，一个技艺精湛的芭蕾舞演员好像在空中可以停上一段让人难以置信的时间。

Pat rolled the trolley to and fro.

帕特来回推着手推车。

Those boats are prepared for waftage to and fro.

那些船舶是准备用来来回运送货物的。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之间。

Wilkie watched the to and fro of their dancing.

威尔基看着他们来来回回地。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

绍DHEA的另一种提方法,从红废———中提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

在一种大幅度的侧身跃动作（小）中，一个技艺精湛的芭蕾演员好像在空中可以停上一段让人难以置信的时间。

Pat rolled the trolley to and fro.

帕特来回推着手推车。

Those boats are prepared for waftage to and fro.

那些船舶是准备用来来回运送货物。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之间。

Wilkie watched the to and fro of their dancing.

威尔基看着他们来来回回地跳舞。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

介绍DHEA另一种提方法,从红薯废料———薯渣中提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

在一种大幅度侧身跳跃动作（小跳）中，一个技艺精湛芭蕾舞演员好像在空中可以停上一段让人难以时间。

Pat rolled the trolley to and fro.

帕特回推着手推车。

Those boats are prepared for waftage to and fro.

那些船舶是准备回运送货物。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之间。

Wilkie watched the to and fro of their dancing.

威尔基看着他们回回地跳舞。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

介绍DHEA另一种提方法,从红薯废料———薯渣中提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

在一种大幅度侧身跳跃动作（小跳）中，一个技艺精蕾舞演员好像在空中可以停上一段让人难以置信时间。

Pat rolled the trolley to and fro.

帕特来回推着手推车。

Those boats are prepared for waftage to and fro.

那些船舶是准备用来来回运送货物的。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之。

Wilkie watched the to and fro of their dancing.

基看着他们来来回回地跳舞。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

介绍DHEA的另提方法,从红薯废料———薯渣中提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

在幅度的侧身跳跃动作（小跳）中，个技艺精湛的芭蕾舞演员好像在空中可以停上段让人难以置信的时。

Pat rolled the trolley to and fro.

帕特来回推着手推车。

Those boats are prepared for waftage to and fro.

那些船舶是准备用来来回运送货物的。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之间。

Wilkie watched the to and fro of their dancing.

威尔基看着他们来来回回地。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

绍DHEA的另一种提方法,从红废———中提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

在一种大幅度的侧身跃动作（小）中，一个技艺精湛的芭蕾演员好像在空中可以停上一段让人难以置信的时间。

Pat rolled the trolley to and fro.

帕特来回推着手推车。

Those boats are prepared for waftage to and fro.

那些船舶是准备用来来回运送货物的。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之间。

Wilkie watched the to and fro of their dancing.

看着他们来来回回地跳舞。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

介绍DHEA的另提方法,从红薯废料———薯渣中提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

大幅度的侧身跳跃动作（小跳）中，个技艺精湛的芭蕾舞演员好像空中可以停上段让人难以置信的时间。

Pat rolled the trolley to and fro.

帕特来回着手。

Those boats are prepared for waftage to and fro.

些船舶是准备用来来回运送货物的。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之间。

Wilkie watched the to and fro of their dancing.

威尔基看着他们来来回回地跳舞。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

介绍DHEA的另一种提方法,从红薯废料———薯渣提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

一种大幅度的侧身跳跃动作（小跳），一个技艺精湛的芭蕾舞演员好像可以停上一段让人难以置信的时间。

Pat rolled the trolley to and fro.

帕特来回推着手推车。

Those boats are prepared for waftage to and fro.

那些船舶是准备用来来回运送货物的。

They travel to and fro between London and Paris.

他们奔走于伦敦和巴黎之间。

Wilkie watched the to and fro of their dancing.

威尔基看着他们来来回回地跳舞。

Another means of extracting DHEA is introduced,Extracting DHEA fro m the residue of sweet potato,namely,Dehydro epi androsterone.

介绍DHEA的另一种提方法,从红薯废料———薯渣中提DHEA,即去氢表雄酮。

In a huge sideways jumps called a grand jete, a skillful ballet dancer seems to float fro an impossible length of time.

在一种大幅度的侧身跳跃动作（小跳）中，一个技艺精湛的芭蕾舞演员好像在空中可以停上一段让人难以置信的时间。