不用客氣，隨便坐吧。

Please make yourself comfortable.

Source: Tatoeba

Sentence Composition

=1 不用客氣 bùyòngkèqi
  1. you're welcome
  2. don't mention it
  3. no need to stand on ceremony
=1 不用客氣 bùyòngkèqì don't mention it; you're welcome
2 隨便 suíbiàn
  1. as one wishes
  2. as one pleases
  3. at random
  4. negligent
  5. casual
  6. wanton
=3 坐 Zuò surname Zuo
=3 坐 zuò
  1. to sit
  2. to take a seat
  3. to take (a bus, airplane etc)
  4. to bear fruit
  5. variant of 座 zuò
=4 吧 bā
  1. bar (loanword) (serving drinks, or providing Internet access etc)
  2. to puff (on a pipe etc)
  3. (onom.) bang
  4. abbr. for 贴吧 tiēbā
=4 吧 ba
  1. (modal particle indicating suggestion or surmise)
  2. ...right?
  3. ...OK?
  4. ...I presume.
=4 吧 biā (onom.) smack!
=4 吧 pā only used in 吧呀