益阳空气质量
288重度污染
0
50
100
150
200
300
500
空气很差，大家应减少外出，并关好门窗。
益阳空气质量
304严重污染
0
50
100
150
200
300
500
空气有毒害，大家应留在室内，并关好门窗。
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