The skyline of Xuzhou and Yunlong Lake (云龙湖)
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The results also suggest that the pollution in different water areas of Yunlong lake is clos...
本文还对造成湖水污染的原因进行了讨论。
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The day before yesterday, I saw a group of about the newspaper pictures of yunlong lake uncivilized phenomenon.
前两天，我看见报纸上登的一组关于云龙湖畔的不文明现象的图片。
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