bar the engine

基本解释

Turn the engine several rounds by turning bar to make sure that everything is correct.
盘车数圈，确认机器上无其他物件及碰卡现象。
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To set the vehicle in motion, the driver climbs aboard, takes hold of the steering bar and connects the engine to the bicycle.
要开动这台机器，司机得坐上座椅，操纵把手，使发动机驱动自行车。
While you may be able to get away with wedging your breaker bar against the cradle and cranking the engine over to remove the crank pulley bolt, you know it's not the best practice.
尽管你可能够逃脱为当转动发动机曲柄时产生的摇动而楔入断裂的木棒，由此可顺利地拆下曲轴皮带轮螺栓，也许你知道这不是最好的做法。

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