adolescent
adolescent(青少年,12-18岁,正式书面,个体或群体)
youth
youth(青年,范围更广,可至25岁;可作集合名词:the youth = 青年一代)
Research suggests that adolescents who engage in regular physical activity perform better academically.
研究表明,定期参加体育活动的青少年学业表现更好。
The programme aims to equip the youth of today with the digital skills needed for tomorrow's economy.
该项目旨在为当今的青年一代提供未来经济所需的数字技能。