adj(1)成年的(of a person or animal that is fully grown)：an～person/monkey/insect 一個(gè)成年人/一只成年猴/一只長成的昆蟲;He's not～enough to understand.他還小，懂不了?！纪?mature，grown;
(2)(為)成年人的(of or for mature persons)：～entertainment/movies/education/magazines成人娛樂/電影/教育/雜志;spend one's～life abroad 在國外度過成年以后的生活;The boy can assist in～work.這男孩可以輔助成人工作。
(3)成熟(老成)的(intellectually and emotionally mature)：Her behaviour was not particularly～.她的舉止不太老成?！玝ehaviour 老成的舉止;
(4)法定年齡的(old enough to vote，marry，etc)：An～person is a person over an age stated by law，usually 18 or 21.超過法定年齡(通常為18或21歲)的人稱為成年人。
n成年人;成熟的動(dòng)物或植物(fully grown person，animal or plant)[C]：Children and～s have equal rights in this home.在這家里孩子和大人有同等權(quán)利。The film is only suitable for～s.這影片只適合于成年人。treat a child as an～把小孩當(dāng)大人對(duì)待;a dialogue between～s and teenagers 成人與青少年之間的對(duì)話;The bear was a fully-grown～.這是一只完全長成的大熊。
→′adulthood n 成年