然而对于援助认识的争论在很大程度上仍然只是在西方白人的一个小圈子中进行。

Yet the intellectual arguments about aid are still conducted largely within a small circle of Western white men.

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“我们被限制在一个半径十五公里的圈子里”，他回忆说。

"We were hemmed into a radius of 15 kilometers," he recalls.

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当然，我们已经知道，在找到并加入一个社交小圈子时人们确实会改变他们的健康习惯。

Of course, we already know that people can and do change their health habits when they seek out and participate in new social groupings.

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