楼上说的对，看你和谁比，读下来不难。我当年读博时，有几个大二学生和博士生一起上课，学得还挺好。不和这些人比就行了

来源: STEMkid 于 2024-02-09 10:51:25 [旧帖] [给我悄悄话] 本文已被阅读：次

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