名词中文翻译
中文翻译：下环
同义词：
['lower band', 'lower ring', 'lower part例句：1. The lower ring is where the gears fit together.（下环是齿轮相互配合的地方。）']
例句：
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1. The lower ring is where the gears fit together.
下环是齿轮相互配合的地方。
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2. The lower ring was damaged during the accident.
下环在事故中受损。
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3.The lower ring of the gears is responsible for transmitting power.
齿轮的下环负责传递动力。