That service made it "the first United States international air service in scheduled operation, " according to the historic sign marking the spot.
这项服务使它成为“美国第一家有固定航程的国际航空服务公司”。
That service made it "the first United States international air service in scheduled operation, " according to the historic sign marking the spot.
这项服务使它成为“美国第一家有固定航程的国际航空服务公司”。
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