Andrew Schubert, a researcher at the institute for science policy research, says that the rising collaboration is partly out of necessity.

科学政策研究所的研究员安德鲁·舒伯特表示，这种日益增强的合作在一定程度上是必要的。

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Andrew Schubert, a researcher at the institute for science policy research, says that the rise in collaboration is partly out of necessity.

科学政策研究所的研究员安德鲁·舒伯特表示，合作的增长有一部分是出于必要性。

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At the same time, people continue to treat fire as an event that needs to be wholly controlled and unleashed only out of necessity, says Professor Balch at the University of Colorado.

科罗拉多大学的鲍尔奇教授说，与此同时，人们一直把火当作一个需要完全控制且只有在必要的情况下才会让其释放的事件。

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Henderson,who is now 63, says he started to make guitars as a young boy,out of necessity.

VOA: standard.2010.07.06

They claimed they had acted out of necessity; that was their defense.

但他们声称此行为是迫不得已;,他们这样辩护。

耶鲁公开课 - 公正课程节选

The day will come when the politicians will do the right thing for our people out of political necessity and not out of charity or idealism."

VOA: special.2009.09.06

Some forward-looking cities are leading on solving the energy-nexus equation, some out of necessity.

FORBES: On World Water Day: A Call for Innovation

During the heart of the recession, people took on portfolio careers out of necessity.

FORBES: Portfolio Careers: Is the Latest Work Trend Right For You?

But Alistair Darling has decided he's got to make a virtue out of necessity.

BBC: Is Darling planning a 'sensible' Budget?