solemnadj.
冷峻的；表情严肃的
not happy or smiling
Her face grew solemn.
她的脸显得严肃起来。
a solemn expression
冷峻的表情
庄严的；严正的；郑重的
done, said, etc. in a very serious and sincere way
a solemn oath/undertaking/vow, etc.
庄严的誓言、郑重的承诺、严肃的誓约等
庄严的；隆重的
performed in a serious way
a solemn ritual
隆重的仪式
He nodded solemnly.
他郑重地点了点头。
She solemnly promised not to say a word to anyone about it.
她郑重承诺不向任何人透露一个字。
The choir walked solemnly past.
合唱队严肃地走了过去。
These words all describe sb who thinks and behaves carefully and sensibly, but often without much joy or laughter.以上各词均形容人严肃、稳重、认真。
thinking about things in a careful and sensible way; not laughing about sth指严肃的、稳重的、认真的：
He's not really a very serious person.
他并非完全是一个非常严肃的人。
Be serious for a moment; this is important.
严肃点儿，这件事很重要。
( rather formal ) (of a person) serious in manner, as if sth sad, important, or worrying has just happened指人严肃、庄严、沉重：
He looked very grave as he entered the room.
他进屋时表情非常严肃。
serious and sincere指认真的、诚实的、真诚的：
The earnest young doctor answered all our questions.
这个认真的年轻医生回答了我们所有的问题。
looking or sounding very serious, without smiling; done or said in a very serious and sincere way指表情严肃的、冷峻的、庄严的、郑重的：
Her expression grew solemn.
她的表情显得严肃起来。
I made a solemn promise that I would return.
我郑重承诺我会回来的。
solemn
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1
ADJ-GRADED 严肃的;庄严的
Someone or something that is solemn is very serious rather than cheerful or humorous.His solemn little face broke into smiles...
他严肃的小脸蛋上突然绽放出笑容。
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Her listeners nodded solemnly.
听她说话的人神情严肃地点了点头。
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The setting for this morning's signing ceremony matched the solemnity of the occasion.
今天上午签字仪式的布置与该场合的严肃性非常协调。
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4
ADJ-GRADED (承诺、协定等)庄严的，郑重的
A solemn promise or agreement is one that you make in a very formal, sincere way....a solemn pledge that he would never remarry.
他永远不再结婚的郑重承诺
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... he had undergone an emergency operation for a stomach condition which—the doctors solemnly assured him—was potentially fatal.
他接受了一次紧急手术，因为他的胃病非常严重，有可能致命——这是医生郑重告知他的。
adj
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1
- characterized by a firm and humorless belief in the validity of your opinions
- both sides were deeply in earnest, even passionate
- an entirely sincere and cruel tyrant
- a film with a solemn social message
- Synonym: earnest sincere
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2
- dignified and somber in manner or character and committed to keeping promises
- a grave God-fearing man
- a quiet sedate nature
- as sober as a judge
- a solemn promise
- the judge was solemn as he pronounced sentence
- Synonym: grave sedate sober
数据来源：WordNet
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At the most solemn moments he will flash a mocking smile or make an ironic remark
在最庄严的时刻他脸上会闪现嘲弄的微笑或说一句讽刺挖苦的话。
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Drums and cymbals beat out a solemn rhythm .
鼓和铙钹奏出了庄严的节奏。
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I made a solemn promise that I would return .
我郑重承诺我会回来的。
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Her expression grew solemn .
她的表情显得严肃起来。
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Her face grew solemn .
她的脸显得严肃起来。
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His face suddenly turned solemn , his voice confidential .
他脸上的神情突然严肃起来，声音也压低了。
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His solemn little face broke into smiles
他严肃的小脸蛋上突然绽放出笑容。
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He looked solemn .
他看上去很严肃。
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There was nothing portentous or solemn about him . He was bubbling with humour .
他一点也不装腔作势或故作严肃，浑身散发着幽默。
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Erica was solemn , pulling at her blonde curls
埃丽卡表情严肃，扯着自己卷曲的金发。
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He looked very solemn as he announced the decision .
在宣布这一决定时，他显得非常严肃。
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The Premier 's burial was a solemn occasion .
总理的葬礼场面庄重。
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The mourners looked solemn at the funeral .
葬礼上，哀悼者神情严肃。
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His behaviour was not in keeping with the solemn occasion .
他的举止与这庄严的场合不协调。
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The mourning hall was filled with a solemn silence .
追悼会会场庄严肃穆。
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Although they had not made love , they had secretly exchanged solemn vows and pledges , bearing their hearts to each other .
虽未成双，却也海誓山盟，私传表记，已有无限的风情了。
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A solemn silence reigned .
全场肃静无声。
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Even the awful presence of death struck no solemn chill upon him .
就是阎罗王狰狞面目，他见了都不会浑身发抖的。
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His laughter was not very becoming on such a solemn occasion .
在如此严肃的场合，他的笑声很不得体。
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A solemn and grand ceremony was held .
举行了庄严而隆重的仪式。
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He 's always joking ; rarely do we see him in such a solemn mood .
他老是爱开玩笑，我们确实很少见到他这么一本正经。
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We entered into a solemn bond .
我们缔结了一份正式合约。
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The commemoration meeting was permeated with a solemn atmosphere .
纪念会气氛肃穆。
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He spoke in a solemn tone .
他讲话语调庄重。
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All these hostages took a solemn oath on the gospels .
这些人质都手按着福音书立下了庄重的誓言。
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Do not let us be too solemn on the business .
关于这件事，还是不要让我们太认真了吧。
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He is so solemn that everyone who sees him filches .
他这人太严肃，谁见了他都打憷
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He wore an extraordinarily solemn expression .
他脸上带着异常严肃的表情。
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The song was so magnificent and solemn , stirring and penetrating2 that the clouds in the sky were hold up by it .
歌声慷慨悲壮，穿云裂石，连天空中的云彩也被这声音所阻挡不能前进。
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In Chinese culture it 's a solemn place of acceptance that needs to be respected . An upside-down posting of fu on the front door is unnecessary and irreverent .
在中国文化中，大门是庄重之地，倒着贴“福”是不敬的。
常指因发生不幸事件或处于庄重场合而非常严肃的，语义较强。
The mourners looked solemn at the funeral.
葬礼上，哀悼者神情严肃。
The Premier's burial was a solemn occasion.
总理的葬礼场面庄重。
He looked very solemn as he announced the decision.
在宣布这一决定时，他显得非常严肃。
指人或举止认真而诚恳的。
The new secretary is earnest in her work.
新来的秘书工作很认真。
Mark is an earnest man.
马克是个真诚的人。
He had an earnest talk with his girlfriend.
他和女友进行了一次认真的交谈。
I made an earnest effort to persuade her.
我非常诚恳地努力说服她。
尤指因发生重大或令人担心的事件而神情严肃的。
He stood there with a grave look when he heard the news.
他听到这个消息后，脸色凝重地站在那里。
His face was grave when I told him my decision.
当我告诉他我的决定时，他的脸色很严肃。
It was a woman, grave and dignified, who advanced to meet him.
朝他走过来的分明是一个妇人，严肃而端庄。
普通用词，指非常认真而并非开玩笑的，也指人神情严肃的或事情需要认真考虑的。
Do you think he is serious about leaving school?
你认为他当真要辍学吗？
I am pretty serious about what I said at lunch.
我午餐时说的话是非常认真的。
You look serious; is there anything wrong?
你看上去很严肃，出什么事了吗？
This is a serious question.
这是个非常严肃的问题。