on your mind
US /ɑn jʊər maɪnd/
UK /ɑn jʊər maɪnd/

成语
1.
心事, 在想什么
occupying one's thoughts; worrying or concerning one
示例:
•
You look troubled. What's on your mind?
你看起来很烦恼。有什么心事吗?
•
I've had a lot of things on my mind lately.
最近我有很多心事。
在 Lingoland 学习这个单词