Yet its real precedent is Tempelhof Airport in Berlin, a monument to air travel conceived by Albert Speer in the 1930s as a gateway to a new Europe.

然而，它真正的前身是柏林的Tempelhof机场，这座由阿尔波特•斯佩尔先生设计的作品也是航空建筑的里程碑，在上世纪30年代，被看作是进入新欧洲的门户。

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Peer-to-peer travel is a gateway to unique, noncommercial and often more affordable alternatives to hotels, car rentals, and experiences away from home.

CNN: Staying in a stranger's home: A field test