短语
中文翻译：有事情要做
同义词：
["have something on one's mind", 'be in the mood for', 'have a thing in mind']
例句：
-
1. I'm up to something important at work right now.
我现在在工作上有个重要的事情。
-
2. She was up to something secret when she left the house.
她离开家时，正忙着做一件秘密的事情。
-
3. He's been up to something that has everyone talking.
他一直在做一些让大家都议论纷纷的事情。