Correct

飞快

/ fēikuài /
Strokes

Definition

very fast/at lightning speed/(coll.) razor-sharp

Example

As an Adjective

speedy; swift; very fast; at lightning speed

1
Huǒchē
火车
fēikuài
飞快
shǐguò
驶过
chēzhàn
车站
  

The train dashed through the station.

2
Chuán
fēikuài
飞快
xiàngqián
向前
shǐ
驶去
  

The boat leapt forward.

3
Kāi
de
fēikuài
飞快

drive full tilt

4
Fēikuài
飞快
táopǎo
逃跑

dart away

5
Fēikuài
飞快
pǎo
xiàng
yuǎnchù
远处

sprint off/away into the distance

As an Adjective

extremely sharp; razor-sharp