to treat someone or something in a way that is fair and shows their or its true qualities

This postcard doesn't do justice to the wonderful scenery. 这张明信片没能充分展现那美丽的景色。

to do something as well as you can in order to show your true qualities and ability

She didn't really do justice to herself in the interview. 面试时她并未充分展示出自己的能力。