decelerate

1. V-I When a vehicle or machine decelerates or when someone in a vehicle decelerates, the speed of the vehicle or machine is reduced. 减速

...the sensation of the train decelerating. ... 火车减速的感觉。

2. decelerationN-UNCOUNT

The harder the brake pedal is pressed, the greater the car's deceleration. 刹车板踩得越紧，汽车减速越快。

3. V-I When the rate of something such as inflation or economic growth decelerates, it slows down. 减缓

Inflation has decelerated remarkably over the past two years. 过去两年里通货膨胀已经显著地减缓了。

4. decelerationN-UNCOUNT

...a significant deceleration in the annual rate of growth. ...年增长率显著减缓。