- Two great dynasties had emerged
两个伟大的王朝已经崛起 - and were vying for domination.
并在争夺统治权 - This is the story of the battle to conquer land...
本集将讲述陆地征服之战 - ...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 - For most of our planet's history,
在我们星球的大部分历史中 - land has been inhospitable to life.
陆地都不适于生命居住 - A bleak and desolate realm...
一片荒芜