好词典

deceleration

UK //ˌdiːsɛləˈreɪʃən//US //ˌdiːsɛləˈreɪʃən//

词源

源自拉丁语 'de-'(向下)+ 'celerare'(加速),17世纪通过法语进入英语,字面意思为'取消加速'。

noun

❶ 指物体运动速度逐渐减慢的过程或现象,常用于描述车辆减速、经济放缓等场景。

“The car's deceleration was smooth as it approached the traffic light.”

(汽车接近交通灯时减速过程很平稳。)

“Economic deceleration is expected in the third quarter.”

(预计第三季度经济将出现放缓。)

同义词:slowing, retardation, braking

常见短语

rapid deceleration — 指速度在短时间内明显降低,常见于紧急刹车或碰撞前的情形。

“The airbag deployed during rapid deceleration.”

(安全气囊在车辆急速减速时弹出。)