Although face masks, which have become a common sight in Mexico City, are worn by only a few people on the streets of Juarez,pharmacies say they are doing a brisk business selling them.

VOA: standard.2009.04.30

I want to emphasize the point that the various arguments that I have been talking about so far, although they have this common strand-- "Inference to the best explanation"-- are each separate and distinct arguments.

强调一点,到现在为止,我提及的各种论据,尽管它们都是,最佳解释的推论,但每一个都是独立而分明的

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