名词
中文翻译：倒档齿轮
同义词：
['reverse gear', 'reverse clutch', 'reverse gearbox']
例句：
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1. The car's idler reverse gear is designed to help the driver maintain control when accelerating or braking.
汽车的倒档齿轮设计用来在加速或刹车时帮助驾驶员保持控制。
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2. During the test drive, the technician carefully checked the idler reverse gear to ensure it was functioning correctly.
在试驾过程中，技术人员仔细检查了倒档齿轮以确保其正常工作。
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3. The engineer replaced the idler reverse gear with a new one after the old one failedduring the maintenance.
在维护期间，工程师更换了旧的倒档齿轮为新的。