名词
中文翻译：旋转轮
同义词：
['wheel', 'swivel', 'universal joint']
例句：
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1.The car has a swivel wheel on the back, which makes it easy to turn around.
这辆车的后面有一个旋转轮，这使得它很容易转身。
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2.The swivel wheel allows the door to open and close smoothly.
旋转轮使门能够平滑地打开和关闭。
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3.The engineer designed the swivel wheel to improve the stability of the vehicle.
工程师设计了这个旋转轮，以提高车辆的稳定性。