The logical topic space allows for a single subscription to request delivery of all information about arrivals and departures into and out of LHR.

此逻辑主题空间应该允许对LHR机场的航班抵达和起飞信息进行单个订阅。

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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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