no laughing matter

US /noʊ ˈlæfɪŋ ˈmætər/
UK /noʊ ˈlæfɪŋ ˈmætər/
"no laughing matter" picture
1.

不是开玩笑的, 严肃的事情

a serious issue or situation that should not be treated lightly or joked about

:
The company's financial problems are no laughing matter.
公司的财务问题不是开玩笑的
Climate change is a serious threat and no laughing matter.
气候变化是一个严重的威胁,不是开玩笑的