也分的。有些地貌河很深,流速慢。還有很多回轉,水會靜止甚至倒流,那裏魚蝦鳥也多。
所有跟帖:
• 上下分層,左右也分。所以才有涇渭分明等奇特現象。立體看,一股一股的。 -布蘭雅- ♀ (0 bytes) () 06/06/2022 postreply 17:04:15
• 上下分層,左右也分。所以才有涇渭分明等奇特現象。立體看,一股一股的。 -布蘭雅- ♀ (0 bytes) () 06/06/2022 postreply 17:04:15
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