名词
中文翻译：减速器
同义词：
['reducer', "retarder例句：1. The car's engine is a powerful but slow-moving decelerator.（汽车的发动机是强大的但移动缓慢的减速器。）"]
例句：
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1. The car's engine is a powerful but slow-moving decelerator.
汽车的发动机是强大的但移动缓慢的减速器。
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2. The engineer used a decelerator to slow down the train's speed.
工程师使用了一个减速器来减缓火车的速度。
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3. The decelerator was designed to reduce the vehicle's acceleration without affecting its performance.
减速器被设计成减少车辆的加速，而不影响其性能。