Correct

中用

/ zhōng yòng / 
Strokes

Definition

used in

Example

As an Adjective

[usu used in the negative] of use; useful; working well

1
Wǒ
我
lǎo
老
le
了
  
,
bù
不
zhòngyòng
中用
  
。

I'm getting old and useless.