标签：生存危机 相关文章

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In animals, this part of the brain evolved around the time of the dinosaurs before mammals existed. It's hardwired to beat starvation. For three days Jean-Luc has been trapped underground. He hasn't had a morsel to eat. He doesn't know it, but his b

发表于:2018-12-30 / 阅读(51) / 评论(0) 分类 国家地理2008年

英语听力：自然百科 生存危机下的人体反应

In animals, this part of the brain evolved around the time of the dinosaurs before mammals existed. It's hardwired to beat starvation. For three days Jean-Luc has been trapped underground. He hasn't had a morsel to eat. He doesn't know it, but his br

发表于:2019-01-22 / 阅读(63) / 评论(0) 分类 自然百科2008年

企鹅的生存危机

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