其實沒什麽，去年夏天到年底前疫情很平靜了，9月份大學都正常上課，我秋季學期都在教室上課，為什麽不能旅行呢？

來源: 顧劍於 2022-01-31 08:11:17 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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