happyadj.高兴的；幸福的；幸运的；乐意的Happy Teaching寓教于乐happy despatch剖腹自杀happy marriage美满的婚姻happy-clappyn.以狂热和自发性为标志的基督教组织happy memories幸福的回忆Happy athletics快乐体育happy P. E.快乐体育happy childhood幸福的童年happy as a lark非常快活；兴高采烈happy excursion逍遥游

1. He often retraces the happy time during his young age.
   他经常回忆起年轻时代的幸福时光。