3 sentences

1. 医生让他去化验小便。

   yī​shēng ràng tā qù huà​yàn xiǎo​biàn.

   The doctor sent him for a urine test.

   Source: Dong Chinese Dictionary

2. 洗澡时要清洗小便处。

   xǐ​zǎo shí yào qīng​xǐ xiǎo​biàn chù.

   Wash your private parts when you bathe.

   Source: Dong Chinese Dictionary

3. 他半夜起来小便。

   tā bàn​yè qǐ​lai xiǎo​biàn.

   He got up in the middle of the night to urinate.

   Source: Dong Chinese Dictionary