Note that the airport name information in Listing 1 usually is a single line of code.

清单1中的机场名称信息通常是一行代码。

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First, try deleting an airport that you know exists, as shown in Listing 13.

首先，试着删除一个已知确实存在的机场，如清单13所示。

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The code in listing 2 publishes a message to indicate that Air Freedom's flight 1024 has arrived at London Heathrow Airport (LHR).

清单2中的代码发布的消息表明Air Freedom的1024次航班已经抵达伦敦希思罗机场(LHR)。

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