哪里来的烟，这么呛人，像国内的雾霾一样

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怎么回事

yzjcyzjc

FROM EDMONTON JOURNAL:
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5 r$ p' B8 }+ m5 U7 V) B5 XEdmonton suspended in twilight; fires continue to burn

7 \" T6 h$ F; k- E5 W; c1 r8 [EDMONTON - Edmonton remains in a smoky haze as of Thursday morning, with the city seemingly stuck in twilight.

But, according to Alberta government data, the health advisory has been downgraded to a three, which is low health risk, from a high of seven (high risk) on Wednesday.
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: U. g# R" `4 a& yThe air quality is supposed to decrease over the course of the day to a five (moderate health risk) and then a seven by Friday.
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The smoke is blowing into the city from hundreds of fires burning in British Columbia, Northwest Territories and Alberta. Hundreds of thousands of hectares have been razed in the blaze.

yzjcyzjc

有心血管，呼吸系统疾病的人要尽量减少外出。

mont

森林大火