sleep rough
露天睡眠，指在户外或没有固定住处过夜
书面·描述无家可归
英文释义
to sleep outside, often in uncomfortable or temporary conditions, typically due to a lack of permanent housing or accommodation
例句
Many homeless people have to sleep rough in winter.
典故来源
'rough'指粗糙、艰苦，直指无遮蔽的户外睡眠，常见于流浪者语境。