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 留言时间：2010-9-6 17:57:53
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while the Soviet Union bloc had Tupolev Tu and Tupolev Tu in the fleets of stateowned carriers such as Czechoslovak CSA Soviet Aeroflot, |
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留言时间：2010-9-6 17:57:48
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A regular service between Manila and San Francisco was started in December. , |
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留言时间：2010-9-6 17:57:44
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As such airport security serves several purposes To protect the airport from attacks and crime and to protect the aircraft , |
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留言时间：2010-9-6 15:37:38
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请name用中文书写，毕竟懂英文的太少，让我们一起体会你的感悟。谢谢！ |
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留言时间：2010-9-6 9:30:57
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In the aviation industry decided to set up Volcanic Ash Advisory Centers VAACs one for each , |
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留言时间：2010-9-6 9:30:52
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Air transport is a vital component of many international logistics networks essential to managing and controlling , |
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