她受到了雇主非常不公平的对待。

She received very ___shabby treatment from her employers.

由于这样不公平的论点，我的对手失去了民众的青睐。

Due to such ___shabby arguments, my adversaries lost the favour of the population.

对信任你的人耍这种不公平的把戏，真是太卑鄙了。

It was a ___shabby trick to play on someone who trusted you.