他娃儿是个自推牛蛙，不应该给他设限．但是对于俺家普娃儿，高中就最多翻一下Strang的那本书，觉得够用了．

来源: Pilsung 于 2025-07-25 08:59:14 [旧帖] [给我悄悄话] 本文已被阅读：次

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