我想他是在說知識麵的廣度和深度吧，高中不開的AP課不是都叫去CC上嗎，一個課堂裏1/2-1/3是高中生

來源: gpu 於 2024-10-13 10:48:03 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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