我不明白你们在说什么。

I don't understand what you are saying.

I don't understand what you guys are saying.

Source: Tatoeba

Sentence Composition

1 我 wǒ
  1. I
  2. me
  3. my
2 不明 bùmíng
  1. not clear
  2. unknown
  3. to fail to understand
=3 白 Bái surname Bai
=3 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
4 你们 nǐmen you (plural)
5 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)
=6 说 shuì to persuade
=6 说 shuō
  1. to speak; to talk; to say
  2. to explain; to comment
  3. to scold; to tell off
  4. (bound form) theory; doctrine
=6 说 shuō variant of 說 shuō
7 什么 shénme
  1. what?
  2. something; anything