Until a few years ago, business was good even if the air was bad in Dazhang village, a town deep in the Baiyangdian wetlands of northern China that has long prospered from one main industry: processing duck feathers for use in clothes and pillows.
就在几年前，即使大张庄村的空气质量很差，但生意很好。大张庄村位于华北白洋淀湿地，长期因一个主要产业而繁荣：加工鸭毛用于制作衣服和枕头。
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