累而且开心的英文怎么说

可以用 "exhausted but happy" 来表示 "累而且开心" 的意思。

"Exhausted" 是形容词，意思是 "筋疲力尽的，疲惫不堪的"。它来源于拉丁语 "exhaustus"，意思是 "枯竭，用尽"。

"Happy" 是形容词，意思是 "快乐的，愉快的"。它来源于中古英语 "hap"，意思是 "幸福"。

例句：

I was exhausted but happy after completing the marathon. (我在完成马拉松之后感到累而且开心。)
The party went on late into the night, and we were all exhausted but happy when it was finally over. (聚会持续到深夜，当它最终结束时，我们都感到累而且开心。)