“Zingaphezu kuka-50,000 izinhlobo zezibungu, futhi zingaphezu kuka-40 izinhlobo ezivamile ekhaya, izinhlobo ezingaphezu kweziyishumi zazo ezingadala izifo, njengezibungu ezipinki nezibungu zasendlini.” UZhang Yingbo wethule ukuthi cishe amaphesenti angama-80 eziguli ezingezwani nezinto ezithile abangelwa yizibungu, njengezinyosi, i-rhinitis engezwani ne-allergic, ...
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