不明白你在擔心什麼。

I don't see what you're so concerned about.

Source: Tatoeba

Sentence Composition

1 不明 bùmíng
  1. not clear
  2. unknown
  3. to fail to understand
=2 白 Bái surname Bai
=2 白 bái
  1. white
  2. snowy
  3. pure
  4. bright
  5. empty
  6. blank
  7. plain
  8. clear
  9. to make clear
  10. in vain
  11. gratuitous
  12. free of charge
  13. reactionary
  14. anti-communist
  15. funeral
  16. to stare coldly
  17. to write wrong character
  18. to state
  19. to explain
  20. vernacular
  21. spoken lines in opera
=3 你 nǐ you (informal, as opposed to courteous 您 nín)
=3 你 nǐ you (Note: In Taiwan, 妳 is used to address females, but in mainland China, it is not commonly used. Instead, 你 is used to address both males and females.)
4 在 zài
  1. to exist; to be alive
  2. (of sb or sth) to be (located) at
  3. (used before a verb to indicate an action in progress)
5 擔心 dānxīn
  1. anxious
  2. worried
  3. uneasy
  4. to worry
  5. to be anxious
6 什麼 shénme
  1. what?
  2. something; anything