知识,饮杯,青春,永葆青春,英语，n.youth青春[qīngchūn]youth;youthfulness:giveone'syouthtothemotherland;把青春献给祖国fullofyouthandvigour;充满着青春的活力regainone'srevolutionaryvigour;焕发了革命青春keepone'sspirityoung;永葆青春wasteone'sspringtime;虚度青春Shekeepsheryo ...