动词
中文翻译：减速
同义词：
['retard', 'decelerate']
例句：
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1. The carslowed down as it approached the trafficlights.
汽车接近交通灯时开始减速。
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2.The driver slowed down to avoid hittinga pedestrian.
司机为了避开行人而减速。
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3.The train was slowing down as itapproached the station.
火车在靠近车站时开始减速。