HSK V7-9
Correct

飞速

/ fēisù / 
Strokes

Definition

flying speed/rapid (growth)

Example

As an Adverb

rapidly; at full speed

1
Rénkǒu
人口
fēisù
飞速
zēngzhǎng
增长
  
。

The population increased dramatically.

2
Lièchē
列车
fēisù
飞速
chuānguò
穿过
suìdào
隧道
  
。

The train dashed through the tunnel.

3
Jīngjì
经济
de
的
fēisù
飞速
fāzhǎn
发展

rapid development of economy

4
Fēisù
飞速
qiánjìn
前进

gallop ahead