严肃的英文：
solemn
solemnity

参考例句：

deadly seriousness
极为严肃的

Solemnity or dignity of manner.
严肃或庄严的举止

An earnest admonition or reproof;a reprimand.
严肃的劝诫或责怪;斥责

You should be serious in class. Don't behave in a noisy, gay, and boisterous manner.
你上课要严肃，不准嬉皮笑脸。

The consular official wore a rather solemn expression.
领事馆官员脸上的表情相当严肃。

Pierce's open, freckled face was grave
皮尔斯那张有雀斑的大脸庞显得严肃庄重。

The airwaves are noisy with nonsense at a time when we need serious, substantive information.
当我们需要严肃而真实的信息的时候，电视广播却是充斥着废话的噪声。

This light-hearted award helps underscore just how dominant the World No.1 player was in2006.
这个不那么严肃的奖项更能看出2006年世界头号选手的实力。

A person regarded as obnoxiously puritanical.
清教徒的禁欲主义，严肃拘谨的人被认为令人反感的清教徒式的人

My unsoiled name, the austereness of my life, my word vouched against yours, will outweigh your accusation.
我的纯洁无瑕的名声，我那严肃的生活，我那些反驳你的话，都足够压倒你的控诉的。

solemn是什么意思：
adj. 冷峻的；表情严肃的；郑重的；庄严的；隆重的

Solemnity or dignity of manner.
严肃或庄严的举止

The ceremony proceeded in a solemn atmosphere.
仪式在庄严的气氛中进行。

They watched the solemn ceremony.
他们观看那庄严的仪式。

The inauguration was a solemn event.
就职典礼是一件隆重的大事。

A solemn occasion; ceremonial garb.
庄重的场合；正式的服装。

solemnity是什么意思：
n. 严肃,一本正经

Solemnity or dignity of manner.
严肃或庄严的举止

The ceremony proceeded in a solemn atmosphere.
仪式在庄严的气氛中进行。

They watched the solemn ceremony.
他们观看那庄严的仪式。

The inauguration was a solemn event.
就职典礼是一件隆重的大事。

A solemn occasion; ceremonial garb.
庄重的场合；正式的服装。