3 sentences

1. 肾结石可能会阻塞输尿管。

   shèn jié​shí kě​néng huì zǔ​sè shū​niào​guǎn.

   Kidney stones can block the ureter.

   Source: Dong Chinese Dictionary

2. 油脂和食物残渣可能会阻塞厨房的排水管。

   yóu​zhī hé shí​wù cán​zhā kě​néng huì zǔ​sè chú​fáng de pái​shuǐ​guǎn.

   Grease and food scraps can clog the kitchen drain.

   Source: Dong Chinese Dictionary

3. 交通事故导致该路段的交通严重阻塞。

   jiāo​tōng shì​gù dǎo​zhì gāi lù​duàn de jiāo​tōng yán​zhòng zǔ​sè.

   A traffic accident caused severe congestion on this stretch of road.

   Source: Dong Chinese Dictionary