adult

noun

1. （法律上指能为自己的行为负责的）成年人
   a fully grown person who is legally responsible for their actions
   1. Children must be accompanied by an adult.
      儿童必须要有大人陪同。
   2. Why can't you two act like civilized adults?
      你们俩为什么就不能像有教养的成年人那样行事呢？
2. 成年动物
   a fully grown animal
   1. The fish return to the river as adults in order to breed.
      这种鱼长成以后回到河中产卵。

adj.

1. 成年的；发育成熟的
   fully grown or developed
   1. preparing young people for adult life
      指导年轻人做好进入成年期的准备
   2. the adult population
      成年人口
   3. adult monkeys
      长成的猴子
2. （智力、思想、行为）成熟的，成人的
   behaving in an intelligent and responsible way; typical of what is expected of an adult
   1. When my parents split up, it was all very adult and open.
      我父母离异时，事情处理得很成熟、很开放。
3. 仅限成人的（因有色情或暴力内容）
   intended for adults only, because it is about sex or contains violence
   1. an adult movie
      仅供成人观看的电影

1. N-COUNT （法律意义上的）成年人
   An adult is a mature, fully developed person. An adult has reached the age when they are legally responsible for their actions.
   1. Becoming a father signified that he was now an adult...
      当了父亲意味着他已是个成年人了。
   2. Children under 14 must be accompanied by an adult.
      14岁以下的儿童必须由成人陪同。
2. N-COUNT 成年动物
   An adult is a fully developed animal.
   1. ...a pair of adult birds.
      一对成年鸟
3. ADJ 成年的；属于成人的
   Adult means relating to the time when you are an adult, or typical of adult people.
   1. I've lived most of my adult life in London.
      我成年之后的大部分时间都是在伦敦度过的。
4. ADJ-GRADED 成熟的；老成的
   If you say that someone is adult about something, you think that they act in a mature, intelligent way, especially when faced with a difficult situation.
   1. We were very adult about it. We discussed it rationally over a drink.
      在这件事上我们表现得很成熟。我们一边喝酒一边心平气和地谈了谈。
   2. ...dealing with emerging sexuality in an adult way.
      平静对待出现的性征
5. ADJ （涉及性内容的电影或书籍）仅限于成人的
   You can describe things such as films or books as adult when they deal with sex in a very clear and open way.
   1. ...an adult movie.
      成人电影

1. It is important that an adolescent boy should have an adult in whom he can confide
   关键是，青春期的男孩身边应该有一个可以交心的成年人。
2. Becoming a father signified that he was now an adult
   当了父亲意味着他已是个成年人了。
3. Children under 14 must be accompanied by an adult.
   14岁以下的儿童必须由成人陪同。
4. I've lived most of my adult life in London.
   我成年之后的大部分时间都是在伦敦度过的。
5. We were very adult about it. We discussed it rationally over a drink.
   在这件事上我们表现得很成熟。我们一边喝酒一边心平气和地谈了谈。
6. Most adult education centres offer computing courses.
   大多数成教中心都设有计算机课程。
7. I came into adult life clueless about a lot of things that most people take for granted
   我已成年，却对许多大部分人认为理所当然的事情一窍不通。
8. All adult males will be liable for conscription.
   所有成年男子都有义务应征入伍。
9. His adult life mirrored the downward course of his father's life.
   他成年后的生活反映出了他父亲的生活在走下坡路。
10. He had turned into an embittered, hardened adult
    他已经变成了一个愤世嫉俗、冷酷无情的成年人。
11. Eventually your child will leave home to lead her own life as a fully independent adult
    最后，你的孩子会离开家，作为一个完全独立的成年人过她自己的生活。
12. Bevin is now an adult and has relived her birth experience under hypnosis.
    贝文现在是个成年人了，她在催眠状态下重温了自己的出生过程。
13. In many societies, young people are formally initiated into their adult roles.
    在很多社会里，年轻人经过正式仪式才算成年。
14. She is taller than I imagined, more adult, more intense.
    她比我想象的更高、更成熟、更热切。
15. Over one-quarter of the adult population are not fully literate.
    四分之一以上的成年人不具备完全的读写能力。
16. Eventually your child will leave home to lead her own life as a fully independent adult, but in the meantime she relies on your support
    你的孩子最终将长大成人，完全独立，离开家过自己的生活，不过在此期间她会靠你帮助。
17. The pupae remain dormant in the soil until they emerge as adult moths in the winter.
    蛹蛰伏在土壤中，直到冬天它们才蜕变成蛾子飞出来。
18. The adult to child ratio is 1 to 6.
    成人与儿童的比例为1比6。
19. They're separated from the adult inmates.
    他们同成年犯分开关押。
20. She was very sympathetic to the problems of adult students
    她对成年学生的问题深表同情。
21. Offering advice on each and every problem will undermine her feeling of being adult
    对每个问题都给出建议会令她觉得自己不像个成年人。
22. I tried to understand the adult world and could not.
    我试着去了解成人世界，却无法猜透。
23. All adult dogs are routinely wormed at least every six months.
    所有的成年狗至少每半年要例行打一次虫。
24. The boy has reached an adult age and ought to be earning his own living.
    这孩子已经（到了）成年，应该自食其力了。
25. I like his adult approach to the problem.
    我喜欢他老成地处理这个问题。
26. He is adult in behavior.
    从行为上看，他已成熟了。
27. For the convenience of our classification, any over eighteen years old counts as an adult.
    为了我们分类的方便，凡年满18岁者均算成年人。
28. A child's world is completely different from an adult's.
    孩子的世界与成人截然不同。

  mature adult grown-up ripe【导航词义：成熟的】

  mature adj. 成熟的，长成的

〔辨析〕指人或动植物发育成熟的；通常也指小孩或年轻人在性格、情感方面趋于成熟、明白事理的。

  adult adj. 成熟的，成年的

〔辨析〕指人或动物生理上发育成熟的，只作定语；也指待人接物具有成年人特点的。

  grown-up adj. 成年的，长大的；像成年人的

〔辨析〕指已长成大人的，或外表举止像成年人的。

  ripe adj. 成熟的

〔辨析〕多指水果、蔬菜等成熟的，也可引申指时机成熟的。

noun

1. any mature animal

2. a fully developed person from maturity onward

   Synonym:    grownup

adj

1. (of animals) fully developed
   1. an adult animal
   2. a grown woman

   Synonym:    bigfull-grownfully growngrowngrownup

2. designed to arouse lust
   1. pornographic films and magazines
   2. adult movies

   Synonym:    pornographic