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educationOct 2, 20174:58pending

多伦多地区的水处理系统是如何运作的?(下)

英语小小孩

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大多伦多地区的饮用水来自安大略湖,经过层层处理后送入千家万户。而用过的脏水经过各种过滤及消毒处理后,又会被排放回安大略湖。天呢!难道我今天喝的水来自昨天我制造出的脏水?

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多伦多地区的水处理系统是如何运作的?(下)

英语小小孩

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