necessary
美 [ˈnesəˌseri]英 [ˈnesəs(ə)ri]
- n.必需品;〈口〉必需的金钱[行动];〈美方〉厕所
- adj.必需的;必要的;必然的;无法避免的
- 网络必须的;需要的
复数:necessaries

necessary
1.~ (for sb/sth) (to do sth)必需的;必要的that is needed for a purpose or a reason
2.[obn]必然的;无法避免的that must exist or happen and cannot be avoided
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