He ground the gears on the car.
他把汽车排挡踩得嘎嘎作响。
On hills, he must use low gears.
在山上，他必须用低速挡。
He drove wildly, crashing through the gears like a maniac.
他开车很野，发疯似的啪啦啪啦地换挡。
It needs to, you know, shift gears a little.
你知道，它需要稍微换挡。
Please check cargo gears today.
今天请检查甲板设备。
The truck driver shifted gears.
卡车司机换了档。
我想转移一下话题。
You are changing gears too late.
你换档换得太慢了。
Most cars have four forward gears.
大多数汽车有四个前进挡。
There is no need for change gears .
没有改变齿轮的需要。
The new design dispenses with gears.
这种新设计不需要使用齿轮。
Does your car have four or five gears?
你的车是四排挡还是五排挡？
Look, for example, at the teeth on the gears.
比如，请观察齿轮上的锯齿。
He has quite a collection of sports gears.
她有一个小的体育收藏品。
It's like shifting gears too quickly in a car.
这好比汽车的排挡切换过快。
The teeth on the gears mesh as they turn round.
转动时齿轮上的齿与齿相啮合。
Gears help them change speed — like on a bicycle.
齿轮帮助他们改变速度——像自行车一样。
Most main gears are brass with a steel pinion gear.
齿轮极其重要——可能是要考虑的最重要的部件了。
Well, we can't just stand here and watch the gears spin.
我说，我们不能只是呆呆站在这里看着齿轮转动。
Please wipe excess oil from engine nacelles and landing gears.
擦掉发动机吊舱和起落架上多余的油。
Now both the side gears and axle shafts move at the same speed.
现在两个半轴齿轮和半轴的转速相同。
However, most gears in ancient times were made of wood or metal.
不过，古代的齿轮多是用木料制造或用金属铸成的。
Once you give it some throttle you want to take it thru the gears.
一旦你给它一些油门，你要考虑它通过齿轮。
Your instructor will help you learn when skipping gears is useful.
指导老师将帮助您学习何时需要跳挡。
Gears serve to transfer power and change the direction of rotation.
传动装置的作用是传送动力和改变旋转方向。
A new type of gears generated with sine-curved rack are put forward.
提出一种以正弦曲线为生成齿条的齿廓曲线生成的新型齿轮。
A new type of gears generated with sine-curved rack are put forward.
提出一种以正弦曲线为生成齿条的齿廓曲线生成的新型齿轮。
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