If you describe someone as evil, you mean that they are very wicked by nature and take pleasure in doing things that harm other people.
the country's most evil terrorists.
该国最凶恶的恐怖分子。
If you describe something as evil, you mean that you think it causes a great deal of harm to people and is morally bad.
A judge yesterday condemned heroin as evil.
一名法官昨天谴责海洛因危害社会。
If you describe something as evil, you mean that you think it is influenced by the devil.
I think this is an evil spirit at work.
我想这是恶魔在作祟。
evils
Evil is a powerful force that some people believe to exist, and that causes wicked and bad things to happen.
There's always a conflict between good and evil in his plays.
他的戏剧中总是有善与恶的冲突。
Evil is used to refer to all the wicked and bad things that happen in the world.
He could not, after all, stop all the evil in the world.
毕竟,他不能阻止世界上所有的恶行。
If you refer to an evil, you mean a very unpleasant or harmful situation or activity.
Higher taxes may be a necessary evil.
提高税率虽不是件令人愉快的事,但可能是必要的。
the lesser of two evils , the lesser evil
If you have two choices, but think that they are both bad, you can describe the less bad one as the lesser of two evils, or the lesser evil.
People voted for him as the lesser of two evils.
人们投票选他只是出于两害相权取其轻罢了。