serious /ˈsirijəs/ adjective Learner's definition of SERIOUS
[more serious; most serious]
1
: having an important or dangerous possible result严重的；有危险的 -
a serious injury/illness/condition重伤；重病；危急情况
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“You sound terrible.” “It's just a bad cold. Nothing serious.”“听你说话，病得不轻。”“只是重感冒。没什么大不了的。”
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serious risks严重的风险
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For my brother, not going to college was a serious mistake.对我弟弟来说，不去上大学是个大错。
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Crime is a serious problem in this neighborhood.这个街区的犯罪活动很严重。
2
: involving or deserving a lot of thought, attention, or work严肃的；认真的；重要的 -
a serious study重要的研究
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The team is a serious contender for the championship.这支队是强有力的冠军争夺者。
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If you want to quit smoking, you have to make a serious effort.如果你打算戒烟，就必须认真对待。
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They had a serious conversation about their relationship.他们就彼此的关系进行了认真的交谈。
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a serious novel about modern life描写当代生活的严肃小说
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The story raises serious questions about our system of justice.这个报道针对我们的司法制度提出了严肃的问题。
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Dog shows are a serious business.犬展是需要认真对待的事情。
3
: giving a lot of attention or energy to something很感兴趣的；热衷的 -
serious musicians热忱的音乐家
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She is a serious cyclist who rides 200 miles each week.她热衷于骑脚踏车，每周骑行200英里。
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Serious journalists do not pry into the personal lives of famous people.严肃正经的新闻记者是不会窥探名人的私生活的。
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When it comes to fishing, he's very serious. = He's very serious about fishing.一提起钓鱼，他就来劲。
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My sister is serious about her grades.我妹妹很在意她的学习成绩。
4
: not joking or funny严肃的；当真的；非儿戏的 -
a serious story/opera严肃的报道/歌剧
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Don't laugh. I'm serious!别笑。我是认真的！
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Can you be serious just this once? This is important.就这次你能不能严肃些？这事很重要。
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He is serious about moving down South. [=he truly wants/intends to move down South]他是真的想搬到南方去。
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“He says he won't do it.” “Are you serious?”“他说他不会去做那件事。”“此话当真？”
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“I'm joining the army.” “You can't be serious.” [=you have to be joking; I can't believe that you're really joining the army]“我要当兵了。”“你在开玩笑吧。”
5
always used before a noun,
informal : large or impressive in quality or amount巨大的；很多的；给人以深刻印象的 -
After business school, he started making some serious money. [=he started making a large amount of money]商学院毕业后，他开始赚大钱了。
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These are serious shoes!这鞋太大了！
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They did some serious drinking at the bar. [=they drank a lot]他们在酒吧豪饮。
6
: having or involving strong romantic feelings（爱情）非常热烈的 -
Their romance is quite serious. They're even talking about marriage.他们的爱意正浓，甚至已开始谈婚论嫁。
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We've dated a few times, but it's nothing serious.我们有过几次约会，但感觉不来电。
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They are a serious couple.他们是情投意合的一对儿。
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He's never really had a serious relationship with a woman.他从未和一个女人有过真正的恋爱关系。
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often + about 7
: thoughtful or quiet in appearance or manner沉思状的；表情安静的