He revealed hidden pipes that discharged black effluent from local factories into the river, which flows into Lake Tai.
他揭露出了隐藏的管道，从当地工厂向河水泻出黑色污水并且流向太湖。
He revealed hidden pipes that discharged black effluent from local factories into the river, which flows into Lake Tai.
他揭露出了隐藏的管道，从当地工厂向河水泻出黑色污水并且流向太湖。
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