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When you turn the steering wheel, the gear spins moving the rack.
当转动转向盘时，齿轮即转动，而齿条就移动。
youdao
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You need a bag which straps to a rack over your back wheel.
您需要一个袋子其中一个机架带你回轮。
youdao
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You need a bag which straps to a rack over your back wheel.
您需要一个袋子其中一个机架带你回轮。
youdao