- ...and three-quarters of life on Earth.
地球上四分之三的生命化为乌有 - The annihilation was global.
毁灭是全球性的 - It was the world's fifth mass extinction.
这是世界上第五次大规模灭绝 - But there were survivors.
但也有幸存者 - Survivors that would form the basis of all species that exist today.
这些幸存者将成为 今天存在的所有物种的基础 - The birds were the only remaining dinosaurs.
鸟类是唯一幸存的恐龙 - Today, they number more than 10,000 species...
如今 鸟类有超过一万个物种