Growing numbers of scientists therefore see Antarctica as a distant early warning sensor, where potentially dangerous global trends may be spotted before they show up to the north.

【参考答案】

因此，越来越多的科学家把南极洲视为一个远距离早期报警敏感器，在那里地球许多 潜在的危险动向早在它们出现于北方以前就能被发......

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