解小便用英文怎么说

"to urinate" 是英语中表示"解小便"的常用说法。

来源：这个词来源于拉丁语"urinare"，意思是"小便"。

例句：

I need to go to the bathroom to urinate. (我需要去洗手间解小便。)
He had to urinate urgently. (他急需解小便。)
The baby wets her diaper because she needs to urinate. (婴儿湿了她的尿布，因为她需要解小便。)