問好軍博！是的，團結湖/金魚池等處都是低窪之地，匯集了雨水和髒水。北京無大河的確少見，文明古都幾乎都與大河有關的。

來源: 古樹羽音於 2023-07-20 07:50:15 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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