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1·Don't take this medicine unless it's absolutely necessary.

非万不得已不要用这种药。《新英汉大辞典》

2·I consider it (to be) absolutely necessary.

我认为这是绝对需要的。

3·Rebalancing the economy is absolutely necessary.

经济再平衡是绝对必要的。

4·Teach your driver not to, unless absolutely necessary.

教你的司机不要这样做，除非是在绝对必要的时候。

5·This is absolutely necessary if conversion is to succeed.

如果皈依将要成功，这是绝对必要的。

6·It's certainly luxurious - but is it absolutely necessary?

这款实在是有些奢侈了，但是这是否绝对有必要呢？

7·Don't use a speaker phone unless absolutely necessary.

若非必要，不要使用电话的免提功能。

8·Avoid case insensitive searches unless absolutely necessary.

除非绝对必要，否则应该避免大小写不敏感的搜索。

9·Taking shelter during a nuclear blast is absolutely necessary.

在核爆炸的发生时，找掩体躲避是必要的选择。

10·Of course, you should only do this if it is absolutely necessary.

当然，如果这是完全必需的，就只能这样做。

不可或缺

1·Actually, metaphysics is not dispensable, but absolutely necessary to human being and culture, especially to culture reconstruction.

实际上，“形而上学”对于人、文化特别是文化的重建决非可有可无，而是不可或缺。

2·Only in freedom can there be love, which is absolutely necessary in guiding his pupils in uncovering themselves, that is, who they are, and what they are interested in life.

只有在自由的学习气氛下才可能有爱和关怀。这是引领学童认识他们的本真，他们的兴趣爱好不可或缺的前题。

3·The Electronic Commerce is a commercial activity that bases on information technology, and statistic analysis is absolutely necessary to the Electronic Commerce system.

电子商务是以信息技术为基础的商务活动，而统计分析是电子商务系统中不可或缺的一部分。

4·Portal is the absolutely necessary part of many system structures facing service (SOA). So it also introduces the relational conceptions and technology of SOA and SCA that aims at SOA.

门户集成是许多面向服务的体系结构（SOA）应用程序不可或缺的部分，所以我们也介绍了SOA及针对SOA的新规范SCA的相关概念及技术。