名词
中文翻译：活塞发动机
同义词：
['reciprocating engine', 'internal combustion engine']
例句：
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1. The pistonmotor is responsible for powering the car's engine.
活塞发动机负责为汽车的引擎提供动力。
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2. The piston motor is a common component in many modern vehicles.
活塞发动机是许多现代车辆中常见的组件。
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3.The piston motor has been improved significantly since its invention.
自从发明以来，活塞发动机已经得到了显著的改进。