"How lighthearted I feel," said the father, "so pleased and cheerful."

“我感到非常高兴，”父亲说，“非常高兴和愉快。”

Try making some lighthearted plans.

那就试着制定一些轻松的计划吧。

But the lighthearted drama would end in tragedy.

但是这场轻松欢快的戏却以悲剧告终。

The children looks lighthearted after the final exam.

期终考试结束了，孩子们看上去都很轻松愉快。

I wanted to be brave, eager, confident, at ease, lighthearted.

我想变得勇敢，充满渴望，自信，自在，无忧无虑。