Perhaps they'll have more luck tomorrow. 也许它们明天的运气会好一些
The youngsters still have a lot to learn. 幼龙还有许多东西要学
they might have reached if their reign had continued. 能达到何种新的高度 谁都不知道
But mammals have acquired some extraordinary defenses... 但是哺乳动物与蛇的军备竞赛 已经开展超过一亿年
They have their mothers to look after them. 它们有母亲来照顾自己
Most early mammals didn't have armor or size to protect them... 多数早期哺乳动物 没有护甲来保护它们
of what life may have been like for some of those ancient mammals. 古代哺乳动物可能的生活形态
But these ants have their own specialist weapons. 但这些蚂蚁也有自己的专用兵器