To most of the country, it's just another big-boxchain, another in a series of disappearing strip-mall storefronts.
对这个国家的多数人来说,它是普普通通的连锁大卖场,是接二连三倒闭的路边店中的一员。
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The wooden box is actually a homemade device for doing polymerase chain reactions (PCR), a process that turns small samples of DNA into quantities large enough to analyze.