1N-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. (法律意义上的)成年人
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。
Children under 14 must be accompanied by an adult.
14岁以下的儿童必须由成人陪同。
SYN grown-up, mature person, person of mature age, grown or grown-up person
2N-COUNT [oft NOUN n]成年动物 An adult is a fully developed animal. 成年动物
...a pair of adult birds.
一对成年鸟
3ADJ [ADJ n]成年的;属于成人的Adult means relating to the time when you are an adult, or typical of adult people. 成年的;属于成人的
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。
4ADJ-GRADED [verb-link ADJ]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. 成熟的;老成的 [approval]
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。
...dealing with emerging sexuality in an adult way.
平静对待出现的性征
5ADJ (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. (涉及性内容的电影或书籍)仅限于成人的