關於此事毫無疑問。

There is no doubt about it.

Source: Tatoeba

Sentence Composition

1 關於 guānyú
  1. pertaining to
  2. concerning
  3. with regard to
  4. about
  5. a matter of
2 此事 cǐshì this matter
3 毫無疑問 háowúyíwèn
  1. certainty
  2. without a doubt