1. 名詞
   不可數名詞: 減速
   deceleration in ...(事):
   在...上的減速
   可為可數與不可數名詞/
   複數為"decelerations":
   (車等的)減速度
   

   同義字詞
   braking,letup,retardation,slowdown
   

例句

1. We have seen deceleration in sea level rises.
2. During deceleration , the engine is kept idle.
3. It depends on the deceleration of earth rotation.
4. The peak of reentry deceleration was still to come.
5. He was assigned to the deceleration project in March 1947.
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