名词
中文翻译：Unknown
同义词：
['propulsor', 'propeller', 'traction device']
例句：
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3.
在建筑中
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1. The arrector is responsible for moving the machine forward.
推进器负责推动机器前进。
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2. The arrector was designed to increase efficiency in transportation.
推进器的设计目的是为了提高运输效率。
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3. The construction site had an arrector installed to lift heavy materials.
施工现场安装了一台起重机来吊起重物。