在雾茫茫的空气里，大地在散发着水蒸汽。
然后开车走了，几分钟后他拿来了三件外套给我们，随即又消失在雾茫茫的黑暗中。
He zooms off and reappears minutes later with three coats before zooming away again into the misty darkness.
“这些微细颗粒物是影响可见度，让天空看起来雾茫茫的原因，”康奈尔空气质量专家威斯·特达说，“它也是最直接影响健康的因素。”
"The fine particulate matter is what affects visibility and makes it look like a horrible foggy day," said Cornell air quality expert Westerdahl. "it also is what most directly affects human health."
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