He was not good at algebra in middle school.

他中学时不擅长代数。

Brasseur, G., Solomon, S., Aeronomy of the middle atmosphere(2nd ed.), D. Reidel Publishing Company, 1986.

霍尔顿，《动力气象学引论》，气象出版社，北京，1986。

An aberrant internal carotid artery in the middle ear is a rare otological finding.

摘要中耳腔之异位内颈动脉，文献报导极少。

Align the ruler and the middle of the paper.

使尺子与纸张中部成一条直线。

There's a channel in the middle of the old street to help rainwater flow away.

旧街道中央有一条沟渠来排放雨水。

He intends to redistribute income from the middle class to poorer paid employees and pensioners.

他意图把中产阶级到低薪雇员和退休人员收入做重新分配。

The bed sags in the middle, and is uncomfortable.

床中往下塌，很不舒服。

The wall is projected in the middle.

这堵墙壁在中部凸出。

There is a parkway running through the middle of the town.

小镇中央有一条风景区干道。

The ranch is in the middle of a large plateau.

该牧场位于一个辽阔高原中部。

Who's pounding at the door in the middle of the night?

午夜时分, 不知谁在敲门?

Rotundity and squareness, Can middle keypunch and come picture make to measure.

圆形和方形，可中打孔及来图定做。

Sound transmission in middle ear and microphonic potential.

中耳传音功能和微音器电位。

Her parents quarelled a lot, and unfortunately she was always piggy in the middle.

她父母经常争吵，不幸是，她常常被夹在中。

The male menopause is said to affect men who are approaching middle age.

据说步入中年男人会经历男性更年期。

During menstrua-tion,the sensitivity of a woman's middle finger is reduced.

妇女来月经时中敏感性会降低。

During preparing potassium sulfate or langbeinite,schoenite is the important middle resourses.

在硫酸钾或钾镁肥生产过程中,软钾镁矾是其中很关键中原料。

He sneaked away in the middle of the meeting.

他在会议中悄悄离开了。

The wheel twisted off in the middle of the car race.

赛车比赛进行到一半时轮子甩了出来。

The cart stopped suddenly, tipping its load off in the middle of the road.

马车突然停下来, 车上货滑落到路中。