at need

基本解釋

At need one sees who his friend is.
處困境可以看出誰是自己的朋友。
blog.sina.com.cn
He had even at need contrived to aid and multiply the industries of other arrondissements.
在必要時，他還能幫助和發(fā)展其他縣的工業(yè)。
Paul Yock, head of the bio-design laboratory at Stanford University, which develops medical devices, argues that medical-technology giants have “l(fā)ooked at need, but been blind to cost.”
身為開發(fā)醫(yī)療設(shè)備的斯坦福大學(xué)生物設(shè)計實驗室負(fù)責(zé)人的Paul Yock認(rèn)為，醫(yī)療技術(shù)巨頭們“看到需要，卻看不到成本”。

That needs to be understood. But this time, we need to put the story of emancipation at the center of this narrative, because what really transformed the United States, were not those battles.
So what you gonna see here in United States, especially at university level, is a stronger need for Muslim chaplains.
因此在美國，特別是在大學(xué)里面，需要越來越多的穆斯林教士。
普林斯頓公開課 - 人性課程節(jié)選
In the first example, you could be at a social gathering and you really feel the need for some nicotine.
在第一個例子中，你可能在一個社交聚會上，你特別想找個地方抽根煙。
Do you mind 課堂 - SpeakingMax英語口語達(dá)人

The fiscal commission showed that you need to look at entitlements, you need to look at tax expenditures, you need to look at military spending.
WHITEHOUSE: Press Briefing