How to think about words? What are the words that want words?

1. Missing [sěniàn]: It often refers to the affection or concern of lovers, family members or friends after a period of separation.

2. Thought [sě xi ? ng]: Through thinking activities, it reflects the results of objective existence in people's consciousness.

3. Think about [zu ǒ s ρ y ò ung] Xi: Think about it. Refers to thinking repeatedly.

4, thoughtful [ru ò y ǒ u su ǒ s]: It seems to be thinking about something. Describe what meditation looks like.