...on a day that would change the course of history. 这一天将改变历史的进程
and the world has all but been destroyed by a cataclysmic event. 世界几乎被一场灾难性事件摧毁
It will wait for hours at a time for signs of passing heat. 它会等待经过的热痕迹 一等就是几个小时
for more than a hundred million years. 哺乳动物获得了非凡的防御能力
and developed a streamlined body... 并发展出流线型身体
a handful of pups await her return. 许多幼崽在等待它的归来