in a way that does not give you an advantage or a good chance of success

The salaries compare unfavourably to other fields of work. 这些薪水等级与其他工种相比是偏低的。

It was only a small country, unfavourably situated, with an indifferent soil. 那只是一个小国，地势不利，土地荒凉。

in a negative way that shows that you do not like something

You might look at her home routine and compare it very unfavourably with my busy job in the city. 你尽可看看她在家里每天做的事情，我在城里工作那么忙，她跟我没法比。

I will look unfavourably at people who can't be bothered to turn up for training. 我会看不起那些懒得参加培训的人。