名词
中文翻译：速度降低
同义词：
['deceleration', 'slow down']
例句：
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1.To reduce the speed of the car, we need to apply the brakes.
为了降低汽车的速度，我们需要踩刹车。
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2.The driver must reduce his speed to avoid a collision.
驾驶员必须减慢速度以避免碰撞。
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3.The traffic police are reducing speed limits on this stretch of road.
交通警察正在这个路段上降低速度限制。