名词
中文翻译：Unknown
同义词：
['intermediate gear', 'intermediate speed']
例句：
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1.The car has a middle gear that allows you to drive at a comfortable speed.
这辆车有一个中间档位，可以让你以舒适的速度驾驶。
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2. The driver needs to shift the gears to get the car moving smoothly.
驾驶员需要换档才能让汽车平稳行驶。
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3.The engineer adjusted the middle gear to increase the vehicle's efficiency.
工程师调整了中间档位以提高车辆的效率。