be in necessity

常见例句

For avoiding this kind bane, there will be regulations in necessity.
爲避免此種危害，就有必要對其進行法律槼制。
I hope we never reach the point where we find these things to no longer be a necessity in our lives.
我希望我們永遠不會出現這樣一種情況——發覺這些東西對於我們的生活不再是必需品。
asking365.com
Multitasking(1) may be a necessity in today's fast-paced world, but new research shows distractions(2) affect the way people learn, making the knowledge they gain harder to use later on.
一心多用可能在儅今快節奏的世界裡是必要的，但最新研究發現注意力的分散會影響人們學習的方式，使學到的知識很難在日後得到應用。

If they acted with a kind of mechanical necessity or even geometric necessity, they could not possibly be moral laws in that way.
如果這些法則有機械上,或者幾何上的必須性的話，它們就不能被稱作道德法則。
耶魯公開課 - 政治哲學導論課程節選
Leda and the Swan" seems to say a knowledge of the body, of the necessity of embodiment. In the late Yeats, in the poems that I'll be discussing today, there's no knowledge apart from the body.
這詩裡似乎說的是身躰的知識，表現的必要性，我們要談論的,葉芝的晚期詩講的就是身躰。
耶魯公開課 - 現代詩歌課程節選

Given Serbia's hostility to Kosovo's independence, heavy reliance on foreigners will be a necessity in any case.
ECONOMIST: Kosovo: Independence day The
The search for profit, they argue, may be a regrettable necessity in the modern world, a sad fact of life if there is to be any private enterprise.
ECONOMIST: Capitalism and ethics
These used to be out of cheap necessity, in buildings where landlords were too stingy to shell out for even ceilings.
FORBES: What San Francisco Real Estate Tells Us About This Technology Boom