laugh ·phrase
Definition: If a subject is no laughing matter, it is serious and not something that people should joke about. Level: C2
气候变化绝非儿戏，需要全球立即采取行动。
Climate change is ___no ___laughing ___matter and requires immediate global action.
这次安全漏洞对公司来说绝非小事，引发了一场全面的内部调查。
The security breach was ___no ___laughing ___matter for the company, leading to a full internal investigation.
该地区不断升级的冲突对国际外交而言绝非可以一笑置之的事情。
The escalating conflict in the region is ___no ___laughing ___matter for international diplomacy.