😊
🙂
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This emoji 💭 represents a thought bubble and is usually used to indicate thinking, meditation, doubt or weighing an idea or notion in one's mind. It is like a visualized thinking space floating out of a person's mind, which may be filled with various questions, unformed ideas or ongoing logical reasoning, etc.
Today's plan has not been determined yet. 💭
This problem is a bit difficult. 💭 How on earth should it be solved?