accelerator
词根词缀：
accelerate v. 加速，加快
ac 加强 + celer 快，迅速 + ate 做，造成，使… → 加速，加快
acceleration n. 加速（度）
accelerate的名词
accelerator n. 加速器
accelerate的名词
celerity n. 迅速，敏捷
celer 快，迅速 + ity 具备某种性质，状况 → 迅速，敏捷
decelerate v. 减速
de 减少 + celer 快，迅速 + ate 做，造成，使… → 减速
deceleration n. 减速（度）
decelerate的名词
数据来源：新东方英语词汇速记大全
相关例句：
ERGONOMICS. Light touch accelerator pedal eliminates operator fatigue.
人机工程设计：轻型的加速踏板减轻了操作者的疲劳。
He put his foot down hard on the accelerator.
他用劲踩油门踏板。
He bore down on the accelerator and the truck roared through its course like a heavy bomber.
他踩下油门，卡车像重型轰炸机似地轰然开过。
The Beijing HI-13 tandem accelerator AMS high resolution injector system was developed.
研制了北京HI-13串列加速器AMS专用高分辨注入器系统。
This paper has carried on the detailed analysis to this kind of accelerator's function.
本文对这种加速器的作用进行了详细的分析。
He discovered the accelerator cable had snapped.
他发现，汽车加速器的缆绳断了。