a necessary evil

常見例句

While it can be tedious, it is a necessary evil of systems administration.
盡管它單調(diào)乏味、令人生厭，但它是系統(tǒng)管理所必需的。
Many view Mr Obama’s plan to send more American forces there as a necessary evil.
許多人視奧巴馬先生送更多美軍到那兒為一種有必要的罪惡。
ecocn.org
More fundamentally, they've turned screen time from a signal of geekiness, a job requirement or a necessary evil into a straightforward aspect of modern existence.
更為根本的是，它們把屏幕時(shí)間從極客的標(biāo)識(shí)，工作的要求，或者一個(gè)必要的壞事，變成現(xiàn)代存在的簡(jiǎn)明的一面。

They believed that it was a necessary evil.
Some would get worried and they would discuss slavery as a necessary evil this system entailed upon them.
有些人感到憂慮,他們認(rèn)為傳承下來(lái)的奴隸制,毫無(wú)疑問是種罪惡
耶魯公開課 - 美國(guó)內(nèi)戰(zhàn)與重建課程節(jié)選

Free-market advocates, such as The Economist, then become mere apologists for it as a necessary evil.
ECONOMIST: Capitalism's future
Many view Mr Obama's plan to send more American forces there as a necessary evil.
ECONOMIST: Barack Obama's foreign policy
Until Watergate this was accepted by most as a necessary evil to safeguard the nation's security.
CENTERFORSECURITYPOLICY: The Case Against the Halperin Nomination -- First Edition