室内空气污染事件频繁发生，68%的人体疾病与室内污染有关。
The accidents of indoor air pollution occur quite frequently, and 68% human diseases are related with it.
此外，高温、无风的气象条件非常给力，似乎有意要在美国东部成全一场经典的空气污染事件。
On top of that, weather conditions—high temperatures, calm winds—were just right for a classic summer pollution event in the East.
空气污染已经严重到让人很难发现流感事件『估计是几乎很多人都有呼吸道方面的疾病』，特别是在流感高发期。 但是墨西哥的报告制度似乎相当迅速的发现了一例非典型流感。
Nonetheless Mexican reporting systems seem to have discovered an unusual flu fairly promptly.
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