It was unfair to judge her on such a brief acquaintanceship.

你刚认识她就对她作出评价，这是不公平的。

《牛津词典》

It is unfair to label a small baby as naughty.

硬说一个小小的婴儿淘气是不公平的。

《牛津词典》

It's unfair to punish a whole class for the actions of one or two students.

因为个别同学的行为而惩罚全班是不公平的。

youdao

They said it was unfair. "It's a rich man's war," they cried, "but a poor man's fight.

VOA: special.2009.10.29

Is it unfair or unreasonable to describe this class, ? as Aristotle might, as a natural aristocracy?

一如亚里士多德可能会说．天生贵族，那是不公平或超出情理吗？

耶鲁公开课 - 政治哲学导论课程节选

It turns out when you do that women get hired far more suggesting that the stereotype is A, incorrect and B, has a real negative and unfair effect on people getting hired.

结果发现这样做的话，女人的录取率大大提高,这表明了，第一，刻板印象是不正确的,第二，消极和不公平地影响了,她们的录取率。

耶鲁公开课 - 心理学导论课程节选

Mr. WILLIAM BRIGHTON (Homeless): What they're doing is they're moving suburbia LA back downtown, and in a way it's unfair to a lot of homeless people who have become accustomed to calling downtown, the streets, their home, because they can't afford anything else.

NPR: Redevelopment in L.A. Affects Homeless Population

East Midlands Property Owners (EMPO) claimed the move was unfair at a time of economic hardship.

BBC: Nottingham rented house licence fees prompts row

We feel it is unfair that a top player is getting the benefit of the doubt from the Tour.

BBC: Scot faces European Tour row