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Continue to Chat加拿大野火緻美國多地空氣嚴重污染聯合國總部首次放棄升旗 https://blog.wongcw.com/2023/06/09/%e5%8a%a0%e6%8b%bf%e5%a4%a7%e9%87%8e%e7%81%ab%e7%b7%bb%e7%be%8e%e5%9c%8b%e5%a4%9a%e5%9c%b0%e7%a9%ba%e6%b0%a3%e5%9a%b4%e9%87%8d%e6%b1%a1%e6%9f%93%e8%81%af%e5%90%88%e5%9c%8b%e7%b8%bd%e9%83%a8%e9%a6%96/