Water is a basic necessity of life.
水是一种基本生活必需品。
We recognize the necessity for a written agreement.
我们认为有必要签订一份书面协议。
Air-conditioning is an absolute necessity in this climate.
这样的气候绝对需要有空调。
Modal logic is the logic of necessity and possibility.
模态逻辑是关于必要性和可能性的逻辑。
Obtaining good health insurance is a real necessity while you are studying overseas.
留学时，一份好的医疗保险是非常必要的。
Using alternative fuels and improving energy efficiency is thus both an ecological necessity and a technological challenge.
因此，使用替代燃料和提高能源效率既是生态需要，也是技术挑战。
Andrew Schubert, a researcher at the institute for science policy research, says that the rising collaboration is partly out of necessity.
科学政策研究所的研究员安德鲁·舒伯特表示，这种日益增强的合作在一定程度上是必要的。
Globally, knowing more than one language is viewed as an asset and even a necessity in many areas.
从全球来看，掌握一门以上的语言在许多领域被视为一种优势，甚至是一种硬性的要求。
Water is of vital necessity in the desert.
在沙漠地域水是维持生命的必需品。
PAIN, unfortunately, is a horrible necessity of life.
很不幸，疼痛是生活中一件令人不悦但却无法避免的事情。
Even the most winged spirit cannot escape physical necessity.
连那最高超的心灵，也逃不出物质的需要。
Yet the operation is a matter of choice and not necessity.
其实这个手术只是一种选择，还没到非做不可的地步。
Restless and discontent is the first necessity of progress.
好动与不满足是进步的第一必需品。
Corporate and it systems agility is not a luxury, but a necessity.
公司和IT系统敏捷性不再是奢侈品，而是必需品。
Teaching is not only a pleasure for me, it has become a necessity.
教学对我来说不仅是一种愉悦，它已经成为一种必须。
But countries often weigh this necessity against other social priorities.
但各国经常把这种必要性与其它社会优先重点放在一起权衡轻重。
This built-in necessity is the basis of the laws that govern every society.
这样的内在需要正是规范每一个社会的法律之根基。
More and more people have realized the necessity of learning computers.
越来越多的人认识到学习电脑的必要性。
More and more people have realized the necessity of learning computers.
越来越多的人认识到学习电脑的必要性。
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