optimist happy-go-lucky person carefree fellow
You are either very young or an incurable optimist.
你要么非常年轻,要么是个不可救药的乐天派。
—— 柯林斯例句a happy-go-lucky sort of person
乐天派的人
—— 给力词典精选Gamblers are incorrigible optimists.
嗜赌的人是死不悔改的乐天派。
—— 辞典例句He´s a jolly soul.
他是个乐天派。
—— 辞典例句Bailey had always been an optimist , a sound Marxian optimist.
贝利向来是个乐天派, 是个十足的马克思主义乐天派。
—— 辞典例句