setting in motion a devastating chain of events. 引发毁灭性的连锁反应
...giving them the best possible start in life. 让它们有一个尽可能好的起点
For Edmontosaurus in North America, it's nesting season. 对于北美的埃德蒙顿龙而言 这是筑巢的季节
Our story begins in the Cretaceous period... 故事开始于白垩纪
and this date could be over in seconds. 这场约会就会瞬间结束
...it's no wonder that the most famous predator in the history of life on our planet 难怪地球史上最著名的捕食者
in the eternal game of life and death. 进化出的极端情况
having been locked in an arms race with snakes 在这个过程中
in this instance, the mammals win out. 这次哺乳动物胜出