Correct

教龄

/ jiàolíng / 
Strokes

Definition

years of teaching experience/teaching experience

Example

As a Noun

length of service as a teacher; length of teaching; teaching standing

1
Tā
他
yǐ
已
yǒu
有
30
30
nián
年
de
的
jiàolíng
教龄
  
。

He has been teaching for 30 years. / He is a teacher with 30 years'teaching standing.