youthfuladj.年轻的；有青春活力的；年轻人的；(地质学)幼年期的youthful Mao Zedong青年毛泽东youthful imagination青春的想像youthful misbehavior青少年不良行为youthful misdemeanours年轻人的越轨行为Youthful Dream of Green World阮俊华的绿色之梦youthful cadres worked on politics青年政工干部youthful enthusiasm/energy/inexperience青春的激情/活力；年青人的幼稚