速度speed

• 这车能跑多快?

  how fast can this car go?

指专管缉捕的差役<旧>constable working for a government office in ancient China whose job it was to arrest criminals

• 捕快

  constable

• 马快

  mounted constable

速度高fast

• 长得快

  grow fast

• 飞得快

  fly fast

• 进步快

  make fast progress

• 快船

  fast boat

• 快马

  fast horse

• 快装快卸

  fast loading and unloading

• 工作完成得又快又好

  finish the job quickly and well

• 工作进行得很快。

  Work is progressing quickly.

• 表快五分钟。

  The watch is five minutes fast.

• 他手脚快。

  He's very efficient.

灵敏quick-witted

• 这人脑子快。

  This person is quick-witted.

锋利sharp

• 把刀子磨快

  sharpen the knife

• 剪刀真快。

  The scissors are really sharp.

• 刀子不快。

  The knife is not sharp.

爽快straightforward

愉快happy

• 心中不快

  unhappy

• 毋使亲者痛，仇者快

  don't make your family sad and your enemies happy

赶快hurriedly

• 快点来呀!

  Hurry up!

• 快!快!

  Hurry! Hurry!

• 快来帮忙!

  Hurry up and help!

• 快去快回

  hurry back

• 你尽快回来!

  Hurry back as soon as possible!

参见：快要[kuàiyào]

• 他快回来了。

  He's coming back soon.

• 我在上海快两年了。

  I've been in Shanghai almost two years now.

• 冬天快到了。

  Winter will be here soon.

• 期限快满了。

  Time is almost up.

• 我的钱快用完了。

  I'll have used up all my money soon.

• 客人很快就走了。

  The guests left quickly.

• 很快就收到了回信。

  I received a reply soon after.

• 他快死了。

  He will be dead soon.