名词
中文翻译：推进器
同义词：
['propulsion', 'drive', 'motor']
例句：
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1. The locomotor system is responsible for propelling the vehicle forward.
推进系统负责推动车辆前进。
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2. The locomotor system in a train is essential for its smooth operation.
火车的推进系统对于其平稳运行至关重要。
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3. The locomotor system of a spacecraft is designed to move it through space.
太空船的推进系统设计用来推动它穿越太空。