sleep rough 露宿

“露宿”，动词，指因无家可归或身无分文等而在室外或郊野住宿（to sleep outside because you have no home and no money），与英文“sleep rough”同义，常见表达如“露宿街头（sleep rough on the streets）。

例句：

作为一名流浪汉，他已经习惯于在公园或铁路桥下露宿。

As a tramp, he was used to sleeping rough in the park or under a railway bridge.

有成百上千的孩子露宿在街头。

Hundreds of kids are sleeping rough on the streets.