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. 減速

...the sensation of the train decelerating. ... 火車減速的感覺。

2. decelerationN-UNCOUNT

The harder the brake pedal is pressed, the greater the car's deceleration. 刹車板踩得越緊，汽車減速越快。

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

Inflation has decelerated remarkably over the past two years. 過去兩年裡通貨膨脹已經顯著地減緩了。

4. decelerationN-UNCOUNT

...a significant deceleration in the annual rate of growth. ...年增長率顯著減緩。