to have a field day

• 忙得不亦乐乎

to have a field day的用法和样例：

例句

1. My people have worked like the devil.
   我手下的人一直忙得不亦乐乎。
2. We had a great time laughing and talking together while we waited for the iceman to come.
   我们一边谈笑着，一边等待着售冰者送冰过来，玩得不亦乐乎。