名词
中文翻译：内收齿轮
同义词：
['inward retracting gear', "inward-retracting mechanism例句：1. The car's steering wheel is designed with an inward-retracting gear to improvehandling.（汽车的方向盘设计有内收齿轮，以改善操控性能。）"]
例句：
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1. The car's steering wheel is designed with an inward-retracting gear to improvehandling.
汽车的方向盘设计有内收齿轮，以改善操控性能。
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2. The new elevatorhas a unique inward-retracting gear system that makes it quieterand smoother.
新电梯采用了独特的内收齿轮系统，使其更加安静和平滑。
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3.The engineer explained the inward-retracting gear mechanism of the machine,which helps it move smoothly.
工程师解释了机器的内收齿轮机制，这有助于它平稳移动。