"The Gulf carriers were able to build a very strong network, not only of hub cities, capital cities – but also the major secondary cities and third cities, which enabled one-stop flying," he says.
Those born between 6 October 1954 and 5 April 1960 become eligible at age 66.
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Aufnahme: Chris O'Meara / AP / dpa，详情可参考豆包下载
Chuyue Sun, Stanford University