adj(1)成年的(of a person or animal that is fully grown)：an～person/monkey/insect 一个成年人/一只成年猴/一只长成的昆虫;He's not～enough to understand.他还小，懂不了。〖同〗 mature，grown;

(2)(为)成年人的(of or for mature persons)：～entertainment/movies/education/magazines成人娱乐/电影/教育/杂志;spend one's～life abroad 在国外度过成年以后的生活;The boy can assist in～work.这男孩可以辅助成人工作。

(3)成熟(老成)的(intellectually and emotionally mature)：Her behaviour was not particularly～.她的举止不太老成。～behaviour 老成的举止;

(4)法定年龄的(old enough to vote，marry，etc)：An～person is a person over an age stated by law，usually 18 or 21.超过法定年龄(通常为18或21岁)的人称为成年人。

n成年人;成熟的动物或植物(fully grown person，animal or plant)[C]：Children and～s have equal rights in this home.在这家里孩子和大人有同等权利。The film is only suitable for～s.这影片只适合于成年人。treat a child as an～把小孩当大人对待;a dialogue between～s and teenagers 成人与青少年之间的对话;The bear was a fully-grown～.这是一只完全长成的大熊。

→′adulthood n 成年