名词
中文翻译：自动阻车装置
同义词：
['automatic stop gear', 'automatic transmission gear', 'automatic gearbox']
例句：
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1. The car has an automatic stop gear that can be used to slow down quickly.
这辆车有一个自动挡，可以用来快速减速。
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2. The new car comes with an automatic transmission gear that makes driving smoother.
这款新车配备了自动变速齿轮，使驾驶更加顺畅。
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3. The old car had a manual gearbox that required more effort to shift gears.
那辆旧车有一个手动变速箱，需要更多的努力来换档。