Generational tensions are being fueled by continuing debate over Social Security benefits, which mostly involves a transfer of resources from the young to the old.

围绕社会保障福利的持续争论加剧了两代人之间的紧张关系，主要涉及资源从年轻人向老年人的转移。a

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But mostly they want to move up the value chain, mixing and matching skills and advantages from all over the world.

但是大多数情况下，他们意欲提升他们的价值链，将来自于全球的技术与优势融合在一起。

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A molecular cloud is a region containing cool interstellar gas and dust left over from the formation of the galaxy and mostly contains molecular hydrogen.

分子云是一个包含冷却星际气体和尘埃的区域，这些气体和尘埃是星系形成之后的残留物，主要由氢分子组成。

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Japanese inbound flights from Shanghai were mostly normal over the weekend, despite the disaster.

FORBES: China Sends Rescue Workers to Quake Ravaged Japan-Xinhua

The research involved 150 cancer survivors from across Scotland, mostly over the age of 55.

BBC: Cancer 'changes outlook on life'

Calls to the victims, mostly folks over 55 years of age, were made from Costa Rica using Internet-connected computers that disguised the origin of the calls.

FORBES: Bah Humbug As Sweepstakes Telephone Con Artist Gets Prison