Beijing had 10 hazy days in December, the report said without saying how bad the haze was.
Beijing had 10 hazy days in December, the report said without saying how bad the haze was.
北京在12月份有10天发生霾害，但报导未说明霾害程度。
Beijing had 10 hazy days in December, the report said without saying how bad the haze was.
北京在12月份有10天发生霾害，但报导未说明霾害程度。