HSK 5 · verb · adjective · classifier
堵
to block up; congested; to stop up (堵)
路上很堵，我们迟到了。
Lùshang hěn dǔ, wǒmen chídào le.
The road was congested, so we were late.
路上堵车，我迟到了。
Lùshang dǔchē, wǒ chídào le.
There was a traffic jam, so I was late.
由于堵车，他迟到了。
Yóuyú dǔchē, tā chídào le.
He was late because of the traffic jam.
他迟到的原因是堵车。
Tā chídào de yuányīn shì dǔchē.
The reason he was late is the traffic jam.