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引用第6楼tjm2008于2010-06-15 22:45发表的 :长江三峡中好象有最深是海拔-45米的河段.
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引用第10楼fywbcao于2010-06-16 14:15发表的 :我知道,应该是西江上游,在黔桂间的的暗河段, 河流深在地下,上千米都有可能,而且是天然形成的。
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