HSK V7-9
Correct

内行

/ nèiháng / 
Strokes

Definition

expert/adept/experienced/an expert/a professional

Example

As an Adjective

expert; adept; knowledgeable

1
Tāmen
他们
zài
在
zhè
这
fāngmiàn
方面
bú
不
shi
是
tèbié
特别
nèiháng
内行
  
。

They are not particularly expert in this area.

2
Zài
在
pòyì
破译
jūnshì
军事
xìnhào
信号
fāngmiàn
方面
hěn
很
nèiháng
内行

be expert at/in/on deciphering military signals

3
Bù
不
nèiháng
内行

be no expert (at/in/on)

As a Noun

expert; specialist; professional

4
Chōng
充
nèiháng
内行

pose as an expert