HSK V7-9
Correct

减速

/ jiǎnsù / 
Strokes

Definition

to reduce speed/to slow down/to take it easy

Example

As a Verb
slow/gear down; decelerate; retard
1
Tā
他
jiāng
将
qìchē
汽车
jiǎnsù
减速
hòu
后
tíng
停
le
了
xiàlai
下来
  
。

He slowed the car down and stopped.

2
Jiǎnsù
减速
xìnhào
信号

reduced speed signal

3
Jiǎnsù
减速
xìtǒng
系统

deceleration system

4
Jiǎnsù
减速
ànniǔ
按钮

retard button