名词
中文翻译：封闭运动
同义词：
['closed loop', 'closed circuit', 'closed loop system']
例句：
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1. Therobot has a closed movement that allows it to move in a straight line.
这个机器人有一个闭合的运动，使它能够直线移动。
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2.The closed movement of the machine is crucial for its operation.
机器的闭合运动对其操作至关重要。
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3. The closed movement of the car's wheels helps it to accelerate quickly.
汽车轮子的闭合运动有助于它快速加速。