Northern China is braced for more days of hazardous air quality following a week of toxic smog in Beijing that has consistently averaged more than 16 times the World Health Organisation’s recommended upper limit.
中國北方在今後幾天將繼續面對有害的空氣質量。先前，有毒霧霾持續籠罩北京已有一週，汙染物含量平均爲世界衛生組織(WHO)建議上限的逾16倍。
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