necessary基本解释
adj.必要的；必然的
n.必需品
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名词复数: necessaries
adj.必要的；必然的
n.必需品
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名词复数: necessaries
noun
1. anything indispensable
e.g. food and shelter are necessities of life
the essentials of the good life
allow farmers to buy their requirements under favorable conditions
a place where the requisites of water fuel and fodder can be obtained
Synonym: necessityessentialrequirementrequisite
adj
1. unavoidably determined by prior circumstances
e.g. the necessary consequences of one's actions
2. absolutely essential
1. 必需的：注:*有限应用(limited applicability),**适宜的(suitable),***有重要价值(important),****必需的(necessary)损伤等级(AIS) 为使肌体损伤程度达到量化,美国机动交通医学会(1990)制定了损伤分级标准,如表2所示.
2. 必须的：二、花费是常见的(ordinary)和必须的(necessary). 「常见的」定义是,其花费在行业内、商业上很平常,被业者广泛接受. 「必须的」的定义是该花费对生意很有帮助. 这里的关键因素是旅行的主要目的是商业,其中穿插几天游玩也可视为常见的.
3. 必需品：2、 商品满足需要的属性:奢侈品(luxury)的需求,对价格是有弹性的,而必需品(necessary)是缺乏弹性的.
Pincher..left the ship with..a little bundle of necessaries.
出自：Taffrail误 I am necessary to finish my homework before seven o'clock.
正 It is necessary for me to finish my homework before seven o'clock.
析 表示“某人必须做某事”时,须用It is necessary for sb to- v 结构。
I probably won't make the necessary changes to create a new job which will bring pleasure to my life.
我可能不会做出必要的改变来创造一份能给我的生活带来快乐的新工作。
2020山西省卷
It's necessary for us to wear masks (口罩) in public places during the COVID-19 period.
在新冠肺炎期间, 我们有必要在公共场所戴口罩。
2020云南省卷
It is clear that Confucius’ thought will continue to be a necessary part of Chinese culture.
显然，孔子的思想将继续成为中国文化不可或缺的一部分。
2020成都市B卷
Unfortunately, you must carry the necessary equipment with you, since it's all but impossible to find natural substitutes.
不幸的是, 你必须随身携带必要的设备, 因为几乎不可能找到天然的替代品。
2017全国卷1
Persons in other cultural groups value silence and view it as necessary for understanding a person's needs.
其他文化群体的人重视沉默, 认为沉默是理解一个人需求的必要条件。
2016全国卷1
On the one hand, it's a necessary condition for many worthwhile things: child care, friendships, etc.
一方面，它是很多有价值的事情的必要条件:照顾孩子、友谊等。
2018英语一
The necessary amount of companies' spending on it is unknown.
公司在这方面的必要支出是未知的。
2016英语一
Humanity has the necessary agro-technological tools to eradicate hunger, from genetically engineered crops to artificial fertilizers.
人类拥有消除饥饿的必要农业技术工具，从转基因作物到人造肥料。
2013英语一
