王國維說人生三重境界：懸思、苦索、頓悟。小孩子學數學也有幾重境界：被迫、容易、喜歡、唯美

來源: 成功的飛過於 2024-06-18 05:54:37 [舊帖] [給我悄悄話] 本文已被閱讀：次

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