necessity的例句

1. Water is a basic necessity of life.: 水是一种基本生活必需品。

2. There is agreement on the necessity of reforms.: 关于改革的必要性有一致意见。

3. We were discussing the necessity of employing more staff.: 我们在讨论是否需要雇用更多员工。

4. Air-conditioning is an absolute necessity in this climate.: 这样的气候绝对需要有空调。

5. There had never been any necessity for her to go out to work.: 她从来就没有出去工作的必要。

6. The population failed to understand the necessity for the war to go on.: 人们没能理解那场战争继续下去的必要性。

7. As soon as the necessity for action is over the troops must be withdrawn.: 一旦军事行动的必要性不复存在，部队必须撤离。

8. The violence of the revolutionary years was justifiable on the grounds of political necessity.: 出于政治需要的立场，革命年代的暴力行为是无可非议的。

9. It would be the first time in human history that economic necessity has prevailed over military aggrandizement.: 经济需要压过了军事扩张，这将是人类有史以来的第一次。

10. Travel has become a necessity.: 旅行已经成为一种必需品。

11. Necessity is the mother of invention.: 需要乃发明之母。

12. This necessity comes with the rise of big science.: 这种必要性是伴随着大科学的崛起而产生的。

13. The fund-raising ability is largely a product of experience and necessity.: 筹集资金的能力在很大程度上是经验和必要性的产物。

14. Obtaining good health insurance is a real necessity while you are studying overseas.: 留学时，有一个好的医疗保险是非常必要的。

15. There will be 6 billion over five years, which could help pay for new vehicles and other survival necessity.: 在未来五年内将有60亿美元用于支付新车费以及其他生存必需品费用。

16. Sometimes convenience or practical necessity or just the fancy of an influential person can establish a fashion.: 有时，某种便利或实际的需要，或仅仅是一个有影响力的人物的幻想就可以引领一种时尚。

17. If you are a manager of technology at any level, then this is your responsibility as well as a survival necessity.: 如果您是某个层级技术的经理，那么这是您的职责，也是您赖以生存的必需品。

18. Machine translation makes some parents raise doubts about the necessity for their children to learn foreign languages.: 机器翻译使一些父母怀疑是否有必要让他们的孩子学习外语。

19. 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。

20. 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。

21. At the same time, people continue to treat fire as an event that needs to be wholly controlled and unleashed only out of necessity, says Professor Balch at the University of Colorado.: 与此同时，人们仍然认为火是一种需要完全控制的事件，只有在必要的时候才能释放出来，科罗拉多大学的鲍尔奇教授说。

22. However, few people realize the importance of basic skills. As is shown in the picture, the pupils in the class are questioning the necessity of learning basic skill such as multiplication table.: 然而，很少有人意识到基本技能的重要性。如图所示，班上的学生正在质疑学习诸如乘法表这样的基本技能的必要性。

23. We recognize the necessity for a written agreement.: 我们认为有必要签订一份书面协议。

24. This is, of necessity , a brief and incomplete account.: 这必然是一份简略的、不完全的描述。

25. Living in London, he felt, was an unfortunate necessity.: 他觉得在伦敦生活是迫于无奈。

26. The president pleaded that strong rule from the centre was a necessity.: 总统争辩说来自中央的强有力的统治是一种必然。

27. Mostly they climb as a necessity to make money.: 他们大多把登山当作赚钱的必经之路。

28. By necessity, narratives are constructed from limited data.: 不可避免的是，这些描述都是基于有限的数据。

29. Necessity will force the swift adoption of more efficient ones.: 需求将迫使我们迅速采取更有效的措施。

30. Some people held that owning an automobile nowadays is a necessity rather than a luxury.: 有些人认为如今拥有一辆汽车是必需而不是奢侈。

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