while also being the prime food source of their enemies. 同时也是敌人的主要食物来源
first appeared in the age of dinosaurs... 最早出现在恐龙时代
all working tirelessly for the colony 为了蚁群和它们的母亲蚁后
we can still find the descendants of those early supersocializers. 我们仍然可以找到 早期超级社会性动物的后代
But even they couldn't compare with the greatest social animals of their age, 但即使是它们也无法 与当时最伟大的社会性动物相比
Their terrible claws bring a swift end to the exhausted Arkansaurus. 它们恐怖的爪子 迅速了结了这只筋疲力尽的阿肯色龙
means this branch of dinosaurs, the theropods, 意味着恐龙的这个分支兽脚
Simple feather-like structures first appeared back in the Triassic. 简单的类似羽毛的结构 最早出现在三叠纪