adj.逍遙自在的；無憂無慮的
例句
用作形容詞 (adj.)
That girl is the most happy- go- lucky person I know.
那個女孩是我所認識的人當中最無憂無慮的人。
He began to talk and laugh, in happy, thoughtless, boyish fashion, as we walked along, and made himself old friends with me at once.
我跟他往前走著，他就談笑起來，高高興興的，無憂無慮的，非常孩子氣，還真是跟我壹見如故。