necessity
柯林斯词典
1. 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As soon as the necessity for action is over the troops must be withdrawn.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。
2. 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。
3. 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。
4. 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。
返回 necessity
necessity /nɪˈsɛsɪtɪ/ (necessities)
剑桥词典
- C1 [ 不可数或单数名词：没有复数形式的名词 ]
- Eating is a biological necessity!
- I took the job out of necessity because we had no money left .
- With a courage born of necessity, she seized the gun and ran at him.
- I had a couple of months to spare between jobs so I thought I'd make a virtue of necessity by acquiring a few new skills .
the need for something
必要，需要
You can come early if you want to, but there's no necessity for it. 你如果愿意可以早点儿来，但不是非早来不可。
[ 动词后面接一个带to的不定式 ] Is there any necessity to reply to her letter ? 有必要给她回信吗?
The report stresses the necessity of eat ing plenty of fresh fruit and vegetables . 这份报告强调了大量食用新鲜水果及蔬菜的必要性。
With a personal fortune of sixty million dollars , she certainly doesn't work out of necessity (= because she needs to). 她有6000万美元的身家，当然不是为了生计而工作。
We'll employ extra staff to help out as and when the necessity arises (= when we need to). 需要的时候我们会另雇员工帮忙。
[ 可数名词：有复数形式的名词 ]
something that you need, especially in order to live
必需的东西；（尤指）生活必需品
We brought only the bare necessities with us. 我们只带了基本的必需品。
He regarded music as one of life's necessities. 他把音乐视作生活中必不可少的东西之一。
例句