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1·When parking on a hill, leave the car in gear.

在斜坡上停车时把汽车挂上挡。《牛津词典》

2·They were sensibly dressed from top to toe in rain gear.

他们非常明智，从头到脚裹着雨具。《柯林斯英汉双解大词典》

3·As soon as the driver puts the car in gear and touches the gas pedal, the engine starts back up.

司机一挂上挡，踩下油门踏板，发动机就重新启动了。

4·I, in the rain gear, rubber boots, and knee-pads, am trying not to slip on the shiny, slick kelp and end up as fish food.

我穿着雨具，橡胶靴，戴着护膝，正尽量避免踩到亮晶晶滑腻腻的海藻而滑倒，免得最后成了鱼食。

5·The emphasis of current economic work is on getting the market in gear.

当前经济工作的重点是启动市场。《新英汉大辞典》

6·You've got your brain in gear today.

你今天脑子转得很快。

7·Undercutting phenomenon is an important problem in gear transmission.

渐开线齿廓根切现象是齿轮传动中一个重要的问题。

8·At present, gear shaving processing is widely used in gear processing.

目前，在齿轮加工中广泛应用剃齿加工方法。

9·The safety switch can be an electrical switch that opens the control circuit if the car is in gear.

安全开关可以是一种电子开关，当汽车挂挡后，它断开控制电路。

10·If the transmission is in gear, then power flows on through to the car wheels so that the car moves.

如果变速器已挂上适当的档位，那么动力就会传递到车轮上，汽车即开动起来。