Some frequent fliers rely on melatonin to put them to sleep in the air.
一些经常乘坐飞机的人总是依赖褪黑激素在飞机上睡觉。
But birds are far less likely to suffer from the clot formation called economy class syndrome-despite being frequent fliers.
但尽管小鸟是空中常客，它们不太可能患上我们容易患上的经济舱综合征。
The unfair fact is that his kind of appeal can be a fast track to character, like one of those express lines frequent fliers enjoy.
他这种外貌上的优势会让他扮演的角色更易成功，就像飞行常客可以享受机场快速通道一样，有些不太公平。
For example, if you are building a travel reservation website, you may have user types such as frequent fliers, vacation planners, and so on.
例如，如果你正在构架一个旅游预约网站，你可能有如下的不同类型的用户：经常乘飞机出门的人，出门度假者等等。
I used to think frequent flier miles were only awarded to, you know, frequent fliers. Or people who use an American Express for big company expenses.
我过去一直认为常规的乘客里程只会奖励给那些常客，或者是那些使用美国运通旅行支票的乘客以及为大公司花费的人。
The estimation of cancer risks associated with these scans is difficult, but using the only available models, the risk would be extremely small, even among frequent fliers.
他们写道：“只用这种模式，就说使用机场扫描仪会导致癌症是很难的。即使是常坐飞机的人，这种风险也许极其的小。
The estimation of cancer risks associated with these scans is difficult, but using the only available models, the risk would be extremely small, even among frequent fliers.
他们写道：“只用这种模式，就说使用机场扫描仪会导致癌症是很难的。即使是常坐飞机的人，这种风险也许极其的小。
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