HSK V7-9
Correct

见效

/ jiànxiào / 
Strokes

Definition

to have the desired effect

Example

As a Verb
take effect; be effective; produce the desired result
1
Zhè
这
yào
药
yī
一
chī
吃
jiù
就
jiànxiào
见效
  
。

This medicine produces an instant effect.

2
Zhèxiē
这些
zhèngcè
政策
hěn
很
jiànxiào
见效
  
。

These policies have produced/yielded good results. / These policies are very effective/successful.

3
Jiànxiào
见效
kuài
快

get/obtain quick results; produce an instant effect; achieve results very quickly

4
Bù
不
jiànxiào
见效

be of no effect; without effect