又一個大學要關門了。這學校的數學夏令營 HCSSiM 還挺出名的，數學好的小中少了一個 EC 活動的選項

來源: STEMkid 於 2026-04-14 07:45:04 [舊帖] [給我悄悄話] 本文已被閱讀：次

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