serious

adj.严肃的，严重的；认真的，庄重的；重要的；危险的

adj.

不好 bad

1. 不好的；严重的；有危险的
   bad or dangerous
   1. a serious illness/problem/offence
      严重的疾病 / 问题 / 罪行
   2. to cause serious injury/damage
      导致重伤；造成严重破坏
   3. They pose a serious threat to security.
      他们对安全构成严重威胁。
   4. The consequences could be serious.
      后果可能是严重的。

需思考 needing thought

2. 需认真思考的；严肃的
   needing to be thought about carefully; not only for pleasure
   1. a serious article
      一篇严肃的文章
   2. a serious newspaper
      一份严肃的报纸
   3. It's time to give serious consideration to this matter.
      到了认真考虑这一问题的时候了。

重要 important

3. 重要的；须重视的
   that must be treated as important
   1. We need to get down to the serious business of working out costs.
      我们该认真地把成本算出来了。
   2. The team is a serious contender for the title this year.
      该队是今年不可轻视的夺标竞争者。

理智 not silly

4. 严肃的；稳重的
   thinking about things in a careful and sensible way; not silly
   1. Be serious for a moment; this is important.
      严肃点儿，这件事很重要。
   2. I'm afraid I'm not a very serious person.
      恐怕我不是一个非常严肃的人。

不是开玩笑 not joking

5. 当真的；认真的
   sincere about sth; not joking or meant as a joke
   1. Believe me, I'm deadly (= extremely) serious .
      相信我，我绝对是当真的。
   2. Don't laugh, it's a serious suggestion.
      别笑，这是一条严肃的建议。
   3. Is she serious about wanting to sell the house?
      她真想把房子卖掉吗？
   4. He's really serious about Penny and wants to get engaged.
      他对彭尼的确是认真的，他想跟她订婚。
   5. You can't be serious! (= you must be joking)
      你一定是在开玩笑吧！
   6. You think I did it? Be serious! (= what you suggest is ridiculous)
      你认为这是我干的？别开玩笑了！

大量 large amount

6. （强调大量）
   used to emphasize that there is a large amount of sth
   1. You can earn serious money doing that.
      干那个，你能挣一大笔钱。
   2. I'm ready to do some serious eating (= I am very hungry) .
      我饿得很，得好好吃一顿。

1. I developed serious arthritic symptoms and chronic sinusitis.
   我得了严重的关节炎和慢性鼻窦炎。
2. We are faced with a serious problem.
   我们面临着一个严重问题。
3. Almost all of these studies have serious flaws.
   几乎所有这些研究中都存在严重谬误。
4. He had suffered a serious case of food poisoning over the Christmas holidays.
   在圣诞假期里，他经历了一次严重的食物中毒。
5. I feel the remark was inappropriate for such a serious issue
   我认为对如此严肃的问题来说，该评论不合时宜。
6. I think you're making a serious mistake
   我认为你正在犯一个严重的错误。
7. No one should mistake how serious the issue is.
   任何人都不该低估该问题的严重性。
8. His ill health poses serious problems for the future.
   他身体不好，对将来造成严重的隐患。
9. The agreement removes the last serious obstacle to the signing of the arms treaty
   这个协议排除了签订武器条约的最后一个严重障碍。
10. In all the confusion, there's a serious risk that the main issues will be forgotten.
    在一片混乱中，主要的问题很有可能会被遗忘。
11. Crime is an increasingly serious problem in Russian society
    犯罪猖獗是俄罗斯社会面临的一个日益严重的问题。
12. The government still face very serious difficulties
    政府仍然面临着非常严峻的困难。
13. Doctors said his condition was serious but stable.
    医生说他的病情很严重，但还算稳定。
14. I regard this as a serious matter
    我认为这件事很重要。
15. Don't laugh boy. This is serious.
    小伙子，别笑，这很严肃。
16. My parents never really faced up to my drug use in any serious way
    我父母从未认真地正视过我的吸毒问题。
17. It was a question which deserved serious consideration.
    这是一个值得认真考虑的问题。
18. There is no point reviewing a blockbuster as you might review a serious novel.
    为一部大片写影评时，没必要像为一部严肃小说写书评那样认真谨慎。
19. You really are serious about this, aren't you?
    你这话的确是发自内心的，是不是？
20. I hope you're not serious.
    我希望你不是认真的。
21. He's quite a serious person
    他是一个非常一本正经的人。
22. She looked at me with big, serious eyes.
    她睁大眼睛若有所思地看着我。
23. He started earning serious money only in the sixties.
    他在60年代才开始挣大钱。
24. He has suffered a serious setback in his political career.
    他的政治生涯遭遇了一次严重挫折。
25. The recent outbreaks of cholera are a timely reminder that this disease is still a serious health hazard
    最近霍乱的爆发及时提醒了人们该疾病仍然会严重危害健康。
26. It causes blindness or serious loss of vision
    这能导致失明或视力严重受损。
27. They regard the problem as not worthy of serious consideration.
    对这一问题他们都认为不屑一顾。
28. What's the matter with you?--Just a bit of a headache; nothing serious.
    你怎么了？--没啥，有点头疼。
29. This severe bout of illness has done serious damage to his health.
    这场大病损伤了他的体力。
30. Mistakes due to carelessness may have serious consequences.
    由粗心大意造成的错误有可能带来严重的后果。