這不公平。

That isn't fair.

Source: Tatoeba

Sentence Composition

=1 這不 zhèbu (coll.) As a matter of fact, ... (used to introduce evidence for what one has just asserted)
=1 這不 zhèbù connects two clauses, emphasising how the following clause substantiates the preceding clause
2 公平 gōngpíng
  1. fair
  2. impartial