young adult 是什么意思？年龄怎么界定？

young adult 是什么意思？年龄怎么界定？

younga.1. 年轻的;幼小的;青春时期的My sister is too young to go to school.我妹妹还未到上学年龄。2. 像青年的,朝气蓬勃的He is old in age yet young in spirit.他虽年老,但朝气蓬勃。3. 初期的,开始不久的The young nation is faced with many difficulties.那个新建立的国家面临许多困难。4. 没有经验的,未成熟的He was young in this kind of work.他对这种工作经验不多。5. (父子、兄弟等之间)年龄较小的;年轻时代的The young Mr. Longman and his father are both doctors.小朗曼先生和他的父亲都是医生。n.1. 青年们Generally speaking, the young are less conservative than the old.一般而言,年轻人比老年人较少保守。2. 崽,雏The swallow is showing its young how to fly.老燕正在教雏燕学飞。