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,還真是跟我一見如故。