Modern sewage and watertreatments have made cholera outbreaks a thing of the past in industrialized countries, according to the Mayo Clinic.
现代生活污水、水处理使霍乱爆发了过去的事情在工业化国家。
2
FREE New Pond, Ammonia Remover, Natural Clear, and Pond Shade watertreatments.
免费新池塘,氨清除剂,自然清晰,色泽池塘水的治疗方法。
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While in two watertreatments, water productivity of W1 treatment with relative more water was lower than that of W2 treatment with relative less water.