All the trilobite can do is try to stay out of reach. 三叶虫能做的只有设法保持距离
Unlike jellyfish, Anomalocaris can swim with both direction and pace. 与水母不同 奇虾游速快且方向准确
And some can even see their surroundings. 有一些甚至能看到周围
This means they can harness the sun's energy to grow, 这意味着 它们能够利用太阳的能量生长
can trace its heritage back four billion years. 都可以追溯到40亿年前
Only the protection of the herd can save her. 只有龙群的保护才能救它
The Triceratops can hold off the youngsters, 三角龙能抵挡两只幼龙
And that means finding the best food wherever she can. 这意味着不论去哪里 都要尽可能找到最好的食物