- He has a rival.
居然还是有对手 - This time, they're evenly matched.
这次它们旗鼓相当 - With these mammals...
对于这些哺乳动物来说 - ...size matters.
大小很重要 - But even the mightiest Megacerops
但即便是最强大的巨角犀 - couldn't overcome the planet's next great challenge.
也无法克服 地球面临的下一个严峻挑战 - The formation of Antarctica was creating global climate chaos.
南极洲的形成正在造成全球气候混乱