"Antarctica creates a hostile environment," says the operations director for the British Antarctic Survey, "if you are not careful, it'll come around and bite you."

“南极洲创造了一个充满敌意的环境，”英国南极调查局运营总监说，“如果你不小心，它就会反咬你一口。”

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Despite these constant threats, aircraft losses to hostile fire in these operations can be counted on one hand, thanks to intricate planning, substantial experience, and advanced hardware.

尽管威胁一直存在，在这些战斗行动中因敌军射击而导致的飞机损失确是寥寥无几，这要归功于详尽的计划，丰富的经验，以及先进的设备。

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These best practices were developed in the crucible of day to day operations and in response to the hostile environment that would make most computers, data, and communications unworkable if they were not in place.

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This proposed legislation offers preferential treatment to nations that remain part of a hostile military alliance and that participate actively in intelligence operations against the United States and its allies.

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But the Pentagon said no blanks were used, and that all the procedures used were consistent with normal operations when there is a threat of encountering hostile forces.

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