名词
中文翻译：Unknown
同义词：
['spur gear', 'propeller', 'flywheel']
例句：
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1. The engine's sprung wheel is responsible for its smooth operation.
发动机的推动器负责其平稳运行。
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2. The aircraft's back gear allows it to land quickly and efficiently.
飞机的回齿轮允许它快速而有效地着陆。
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3. The car's flywheel helps to store energy and power the engine.
汽车的飞轮有助于储存能量并驱动引擎。