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At -100 degrees F, you can burn up to 5,000 calories a day, and with winter at less than 1 humidity, your body will lose water just breathing. This is Antarctica, where close-knit communities of scientists, engineers, and hardened field vets have forged an existence unlike anything on our planet, fighting brutal conditions to conduct crucial science. bt電影天堂網(wǎng)（ m.593haosf.cn）<<第七大陸：南極洲>>，別忘了推薦給你的好友！
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