HSK C4
Correct

阻

/ zǔ / 
Strokes

Definition

to hinder/to block/to obstruct

Example

As a Verb

hinder; block; obstruct

1
Tōngxíng
通行
wúzǔ
无阻

untrammeled/thorough passage

2
Gōngzuò
工作
shòuzǔ
受阻

be impeded in one's work