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來源: 老生長談 2013-11-28 09:22:21 [] [舊帖] [給我悄悄話] 本文已被閱讀: 次 (638 bytes)
"The United States and other wealthy nations have less of a problem because they require modern diesel engines to burn much cleaner than they did even a decade ago. Most industries, like mining, already have limits on the amount of diesel fumes to which workers may be exposed."

The risk may be more about those who are heavily exposed to diesel exhausts, such as miners, highway toll booth collectors and some of truck drivers.  If diesel exhaust causes higher rate of lung cancer, europeans should show that as they have much higher diesel cars on the road.  does europeans prove that theory?

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是的,現在的柴油車不在文章說的情況之內。 -英文關鍵字- 給 英文關鍵字 發送悄悄話 (0 bytes) () 11/28/2013 postreply 18:44:58

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