The descent from the treetops to a life on the forest floor. 从树上下到森林地面生活
the deserts almost doubled in size, 沙漠面♥积♥几乎翻倍
This is the flip side of an ice age. 这是冰河时代的另一面
its impact was still felt across the globe... 但它仍对全球产生了影响
sometimes in the most unexpected ways. 有时影响极为出乎意料