名词
中文翻译：齿轮运行
同义词：
['gearing', 'gearing up', 'gearshift']
例句：
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1. The car's engine is running smoothly as the gears engage.
汽车的引擎平稳地运转着，因为齿轮啮合了。
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2. As the train approached its destination, the gears shifted to prepare for the next stop.
当火车接近终点站时，齿轮转换以准备下一站。
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3. The engineer had to gear up for the heavy workload ahead.
工程师不得不为即将到来的重工作量做好准备。