People are exposed to additional radiation when they get an X-ray or fly in an airplane.

当受到X射线辐射或坐飞机时，人们就会受到额外辐射。

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Naturally occurring radiation varies depending on factors like local geology and altitude. People are exposed to additional radiation when they get an X-ray or fly in an airplane.

正常情况下的辐射量也随地理环境、海拔等因素变化。当受到X射线辐射或坐飞机时，人们就会受到额外辐射。

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You can "fly" an airplane or you can hit a "fly" that is on your food in your house.

你可以让一架飞机飞行，你也可以打死一只停在你家食物上的“苍蝇”。

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But I would rather fly in an airplane with wings designed by one competent aeronautical engineer than one with wings designed by a committee of the first 20, 000 names of non-engineers in the Boston phonebook.

FORBES: Why Some Elites Know Not What They Run

In one game, Pilotwings Resorts, players fly an airplane around an island, steering through hoops or popping balloons.

FORBES: Magazine Article