公視新聞AIR POLLUTION DANGER LEVELS SET TOO HIGH, NO USE|"空汙假"標準太嚴 家長批根本放不到假 ｜ 公視新聞網 PNN
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The air quality in central Taiwan has been poor. Currently, outdoor classes are suspended when the PM2.5 level goes above 150 micrograms per cubic met...
The air quality in central Taiwan has been poor. Currently, outdoor classes are suspended when the PM2.5 level goes above 150 micrograms per cubic met...