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.
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。
N-COUNT 成年动物 An adult is a fully developed animal.
...a pair of adult birds. 一对成年鸟
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.
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。
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.
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
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.