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that day is the most serious smog in guangzhou .people cannot see each other when they drive their car.you walk in that morning just like you are in the darkness
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everything is in the smog,
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because of the heavy smog,many people have got the severe problems of lung,so they came to the hospital
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people will wear a mask when they goto street.but no one knows if it will work
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this is the combination of two pictures . we can simply call it before/after
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the led screen of this way is saying:be careful when you drive your car.
