名词
中文翻译：引擎
同义词：
['motor', 'propulsion']
例句：
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1.The car's engine is sound, but the tires are worn out.
这辆车的引擎运转正常，但轮胎磨损严重。
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2. The train's engine was damaged during the accident.
火车在事故中引擎受损。
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3.The engineer inspected the engine before starting the engine.
工程师检查了引擎后才开始启动引擎。