Necessity is demonstrated from four aspects.
必要性主要从四个方面进行了论证。
参考来源 - 我国农村社会养老保险问题研究The second part illustrates the necessity for judicial reform.
第二部分阐述司法改革吸收民意的必要性。
参考来源 - 试论司法改革如何对待民意（研究生论文）Security is the necessity of transaction.
安全性是任何财产交易的必然要求。
参考来源 - 所有权保险制度的立法研究The first part of the article definite legal nature the of necessity.
论文首先进行紧急避险法律性质的界定。
参考来源 - 紧急避险法律性质研究（研究生论文）In terms of practical base, the education of engineers ethical responsibility is the necessity of development of society and growth of engineers.
就现实基础而言,它既是社会发展的需要,也是工程师自身发展的需要;就理论基础而言,教育哲学、技术哲学、工程哲学以及应用伦理学的相关理论都是它的理论基础。
参考来源 - 工程师伦理责任教育研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
N-UNCOUNT The necessity of something is the fact that it must happen or exist. 必要性
There is agreement on the necessity of reforms.
关于改革的必要性有一致意见。
As soon as the necessity for action is over the troops must be withdrawn.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。
PHRASE If you say that something is of necessity the case, you mean that it is the case because nothing else is possible or practical under the circumstances. 势必 [正式]
...large families where children, of necessity, shared a bed.
…孩子们必定共睡一张床的大型家庭。
N-COUNT A necessity is something that you must have in order to live properly or do something. 必需品
Water is a basic necessity of life.
水是一种基本生活必需品。
N-COUNT A situation or action that is a necessity is necessary and cannot be avoided. 不可避免
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。
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