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.
就在幾年前，即使大張莊村的空氣質量很差，但生意很好。大張莊村位於華北白洋淀溼地，長期因一個主要產業而繁榮：加工鴨毛用於製作衣服和枕頭。
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