necessity
美 [nəˈsesəti]英 [nə'sesəti]
- n.必然性;必要;需要;必需品
- 网络必要性;紧急避险
复数:necessities

necessity
1.[u]必然;必要;需要the fact that sth must happen or be done; the need for sth
2.[c]必需的事物;必需品a thing that you must have and cannot manage without
3.[c][ususing]必然性;不可避免的情况a situation that must happen and that cannot be avoided
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