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人们入窑取菜时,偶尔发生中毒现象。这是因为贮藏的蔬菜在无光的条件下,进行长时间的呼吸作用而产生大量的二氧化碳,使窑内
People into the kiln to take food, occasionally poisoning. This is because the storage of vegetables in the light conditions, for a long time breathing and produce large amounts of carbon dioxide, the kiln