Definition (正义)
This phrase indicates that a particular action or treatment is just, reasonable, and deserved, given the circumstances.
合情合理；应该的
I believe it's only fair to inform you that there have been over 300 applicants for this position.
我认为告知你这个职位已经有超过300名申请者才是公平的。
It's only fair that they should share the profits from the songs they have written.
他们应该分享他们所写歌曲的利润，这才是公平的。
It's only fair that wealthier individuals contribute more through taxes.
较富裕的人通过税收贡献更多才是公平的。