Cách sử dụng
"A necessary evil" is a common expression used to describe something that is bad, unpleasant or unwanted, but is required to achieve a desired outcome or goal. For example, paying taxes is often seen as a necessary evil because it is required by law, even though many people do not enjoy the process. Similarly, taking medicine or enduring a painful treatment for an illness is seen as a necessary evil because it is needed for healing. In general, the expression "a necessary evil" refers to a situation where there is no good option and something negative must be accepted for a greater good.