如果注意保护水土,很多旱灾和这次泥石流都不会发生.
世界上很多地方都下大雨,怎么没有泥石流?
本帖于 2010-08-17 21:12:51 时间, 由版主 Xiaokanshijie 编辑
如果注意保护水土,很多旱灾和这次泥石流都不会发生.
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