This is the 3426th most frequent Chinese word.
心思
"心思" means thought, mind, or intention.
Here, "心思" refers to one's thoughts or focus in the context of concentration.
我最近很难集中自己的心思。
I have recently found it difficult to concentrate my thoughts.
Here, "心思" denotes the effort or thoughtfulness directed towards planning something.
他在计划活动时投入了很多心思。
He put a lot of thought into planning the activity.
In this sentence, "心思" is used to describe one's attention or interest in a particular matter.