"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."

“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。”

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And, as you may know, lack of shut-eye doesn't just leave you foggy the next day: Chronic, long-term insufficient sleep ups your odds of diabetes, depression, cardiovascular disease, even weight gain.

你可能也知道，睡眠不足不仅仅是让你第二天迷迷糊糊，长期的睡眠不足更可能让人患糖尿病，抑郁症，心血管疾病，甚至还会长胖。

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As often as not the buses are late on foggy day.

每逢多雾天气，公车往往误点。

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