阅读，讨论，动手才是受益一生，数学现在学得浅也没关系，大部分将来用不上，届时工作时要用再学不迟

来源: Feinbery 于 2020-09-11 11:43:33 [旧帖] [给我悄悄话] 本文已被阅读：次

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