One study found that unless they lose more than 20% of their university graduates, the brain drain makes poor countries richer.

一份研究发现，除非穷国有超过20%的大学毕业生流失，要不然人才流失会使它们更加富裕。

And so we have benefited from the brain drain of every other country for the last couple of decades.

因此，在过去的几十年里，我们从其他国家的人才流失中受益。

Low pay and grueling hours aren't just dispiriting for individuals; they fuel the brain drain that has contributed to Congress's crippling lack of institutional knowledge.

低薪和艰苦的工作时间不仅让个人感到沮丧，还加剧了人才流失，导致国会严重缺乏制度性知识。

But in a new meta-analysis that looked at data from 27 different brain drain studies, the story of the brain drain hypothesis has gotten a little more complicated.

一项新的元分析中，研究人员对27项不同认知流失数据进行了分析，发现认知流失假说的故事变得有点复杂。