注：“3”表示商品渔药的标注使用浓度。
另一方面，一些农业投入品的使用，农药残留、渔药残留等问题，也严重威胁饮用水的安全性。
On the other hand, the applications of some cultivating additions, residues of pesticide and weed killer and residues of fishery drugs are also a serious threat to the safety of the drinking water.
另一方面，一些农业投入品的使用，农药残留、渔药残留等问题，也严重威胁饮用水的安全性。
On the other hand, the applications of some cultivating additions, residues of pesticide and weed killer and residues of fishery drugs are also a serious threat to the safety of the drinking water.
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