對，北京冬天采暖季節，霧霾很厲害，我2024年冬天，去北京的研究院講課，那天空氣嚴重汙染，也是李克強追悼會那天。

來源: laopika 於 2025-05-31 16:57:08 [博客] [舊帖] [給我悄悄話] 本文已被閱讀：次

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