名词
中文翻译：外部倒车机制
同义词：
['external reverse gear', 'external reverse clutch']
例句：
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1. The car's external reversing mechanism is designed to be easy to use.
这辆车的外部倒车机制设计得很容易使用。
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2.The engineer found that the external reversing mechanism was not functioning properly.
工程师发现外部倒车机制没有正常工作。
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3. The new design of the external reversing mechanism has improved its efficiency significantly.
新型外部倒车机制的设计大大提高了其效率。