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同义词： necessity essential requirement requisite
"the necessary consequences of one's actions"
以上来源于: WordNet
N-PLURAL what is needed; essential items 必需品
the necessaries of life
if necessary 如果必要的话
necessary for 所必需；对…是必要的
necessary condition 必要条件，充分必要条件
when necessary 在必要的时候
as necessary 必要时
absolutely necessary 绝对必要
necessary and sufficient condition 充要条件；必要且充分的条件
where necessary 必要时；需要时；必要地方
sufficient and necessary condition 充要条件；充分必要条件
necessary evil n. 无可避免之灾祸
necessary connection 必然联系
requirements , munitions
necessities things which are needed in order to stay alive
necessaries things which you need；
以上来源于网络
Chili, pepper and shallot are usually necessaries in this division.
红辣椒，胡椒粉和青葱通常是这一部分的必备品。
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These are our necessaries of life.
这些是我们的生活必需品。
They were destitute of necessaries of life.
他们缺少生活必需品。
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