沙尘肆虐，不让出门，请给我一包单词。
英文原文出自于 http://www.chinadaily.com.cn/a/201803/28/WS5abaf3cfa3105cdcf6514c29_1.html
North China blanketed（毛毯，可以用联想搞定它的含义） by dust, sand
Beijing and nine other provincial regions in northern China were hit by（打击，可以用联系搞定它的含义） dust and sand Wednesday, with PM10 readings approaching 2,000 micrograms per cubic meter （每立方米2000微克）in Beijing.
Sand sends smog (烟雾，在这里可以理解为昏天暗地的飞沙） soaring in Beijing
The air quality index （空气质量指数）in Beijing reached the maximum level of 500 on Wednesday morning due to sand dust blown in from Mongolia, the city government said.
The capital recorded high densities of （高浓度） both PM2.5 and PM10, which are fine pollutant particles（很小的污染物颗粒） that can damage the lungs（肺部）, according to the local Environmental Protection Bureau.
The average density of PM10 — particles smaller than 10 microns（微米） in diameter（所谓的PM10) — reached 1,976 micrograms per cubic meter by 7 am, the bureau’s data showed.
Authorities say the smog is expected to last through the day due to a lack of wind and have advised residents to avoid outdoor activities.
Beijing issued a blue warning（蓝色预警） for dusty weather（沙尘天气） on early Wednesday, the first of its kind this year.
An area of 1.5m sq km blanketed by dust, sand
The National Meteorological Center （国家气象中心） said that the dusty weather in northern China began on Monday and has affected an area of about 1.5 million square kilometers.
Starting Wednesday night, the sandy weather is expected to begin abating （减弱）, according to the center.
Part of Inner Mongolia autonomous region was hit with a sandstorm, with the lowest visibility (最低能见度） less than 400 meters.
Affected regions also included the southern part of Xinjiang Uygur （维吾尔） autonomous region, Shanxi, Hebei, Tianjin, Liaoning, Jilin and Heilongjiang.
单词总结：
blanket 覆盖
be hit by dust and sand 沙尘来袭
2,000 micrograms per cubic meter 每立方米2000微克
smog 烟雾，昏天暗地的飞沙
air quality index 空气质量指数
high densities of 高浓度的……
fine pollutant particle 很小的污染物颗粒
lung 肺部
micron 微米
particles smaller than 10 microns PM10
blue warning 蓝色预警
dusty weather 沙尘天气
The National Meteorological Center 国家气象中心
abate 减弱
the lowest visibility 最低能见度
Uygur 维吾尔
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