gradually forming the largest and most hostile desert the planet has ever seen. 逐渐形成 地球史上最大、环境最恶劣的沙漠
thanks to huge changes to the very structure of our planet. 这得益于地球结构的巨大变化
they are the first giant plant-eaters to roam the planet. 它们地球上最早的巨型食草动物
And yet, they never conquered every environment the planet had to offer... 然而它们并未征服 地球上的每一种环境
Today, for every human on the planet, 今天地球上的昆虫
the most visible signs of life on our planet. 植物 是我们星球上的生命最鲜明的标志
...and how it changed everything for life on our planet. 以及它如何彻底改变地球上的一切
our planet was ruled by equally magnificent beasts. 我们的星球被同样神奇的巨兽统治着