因为干旱，该州没有淡水来排放有毒物质的缘故，内华达州是美国水污染最轻的。
Nevada has the lowest level of water pollution in the country because the generally arid state has very little fresh water to dump toxins into.
因为干旱，该州没有淡水来排放有毒物质的缘故，内华达州是美国水污染最轻的。
Nevada has the lowest level of water pollution in the country because the generally arid state has very little fresh water to dump toxins into.
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