Correct

习焉不察

/ xí yān bù chá /
Strokes

Example

Definition

be too accustomed to sth to call it into question; fail to find a latent problem simply because one is too used to it

1
men
我们
tiāntiān
天天
yòng
hàn
汉语
  
,
hàn
汉语
de
语法
què
yānchá
习焉不察
  

Though we use the Chinese language every day, we have no awareness of its grammar.

2
Rénmen
人们
duì
对于
chángjiàn
常见
de
shì
事物
wǎngwǎng
往往
yānchá
习焉不察
  

People usually do not question what they are accustomed to.