難怪，我以前碰到過一位建築學教授，她有個課題是做把地下水道係統，當時覺得好特別的角度。

來源: 南山依然於 2022-08-23 10:00:11 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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