出处：按学科分类—语言、文字 中国对外翻译出版公司《汉英成语词典》第62页（210字）
年纪不大，体力或精神就已衰老，例他经历过不少苦难，因此虽然年纪尚轻，却已未老先衰，暮气沉沉。
Though not old in age，he has gone through so much trouble，that it has left him frail and failing before his time．