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The major sources of water pollution can be classified as municipal, industrial, and agricultural.
水污染主要可分为城市水污染、工业水污染和农业水污染。
youdao
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The major sources of water pollution can be classified as municipal, industrial, and agricultural.
水污染主要可分为城市水污染、工业水污染和农业水污染。
youdao