non-value-added but necessary 必须
complete sth unpleasant but necessary 完成或结束必须做的讨厌事
Simple But Necessary Advice 简单而必须忠告
traumatic but necessary 痛苦但必要
Difficult But Necessary Choices 困难而必要选择
NECESSARY BUT NOT SUFFISIENT 电子书 ; 仍然不足够mp
Necessary But Not Sufficient 仍然不足够
necessary but insufficient 足够的原因
But Not Necessary Condition 但绝非必要条件
But its necessary for you 妳却无它不得
Adults tend to talk about learning as if it were medicine: unpleasant, but necessary and good for you.
成年人谈论学习时,往往把它当作一剂良药:令人不快,却不可或缺,且对你有益。
A depressing, but necessary tale of our times.
这是一个令人压抑的、但却是我们时代需要的记述。
Security is a difficult but necessary proposition for any application.
对于任何应用程序,安全是一个困难但必要的命题。
But they also made it clear that they are willing to act alone, if necessary, to pass a health care bill.
VOA: special.2010.02.27
The fact that I have this star here, this star here, this star here, is really just 'cause I'm a little anal and it looks pretty to make a little box out of everything but it's not strictly necessary.
事实上大家可以看到,这有颗星,这有颗星,这有颗星,其实是我手痒,这看起来像是用*围成个框,把它们包围起来,其实这是完全没有必要的。
Their relationship is necessary but, as we'll see in a minute, arbitrary, and each sign is like that.
这种关系十分必要,但是它又有任意性。
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