And for the first time since the Permian extinction... 自从二叠纪灭绝以来
Pterosaurs and plesiosaurs would both go extinct in time. 翼龙和蛇颈龙终将灭绝
But by the time they'd conquered the seas, the ocean was home to deadly predators. 但当它们征服大海时 海洋已经成为致命捕食者的家园
Nearly three meters long, it's the biggest predator of its time. 长近三米 是当时最大的捕食者
...released by plants during one of the most amazing events of all time... 在史上最伟大的一个事件期间 由植物释放而出
Once upon a time, this defense would have worked. 在过去 这种防御会有效果