The United States boasts 19 aircraft carriers against a SINGLE aircraft carrier for Russia.

美国拥有 19 艘航母， 而俄罗斯只有一艘航母。

Not so in America: at 40 of its 100 biggest hubs, a single carrier now accounts for more than half of capacity.

在100个最大的枢纽机场中，有40个机场超过一半的容量都属于某一家航空公司。

Most international routes were operated by a single national carrier and the lack of choice resulted in uncompetitive fares for consumers.

大多数国际航线由单一的国家承运人运营，缺乏选择导致消费者的票价缺乏竞争力。

But where Iran is really weak is in the water, as it doesn’t have a single aircraft carrier to speak of.

但伊朗真正薄弱的地方是在水中，因为它没有一艘航母可言。