As temperatures kept rising and the meltwater lake kept growing, 随着温度不断升高 融水湖不断扩大
The ice began to melt as Earth's orbit shifted once more 随着地球轨道再次发生变化 冰开始融化
What started as a series of meltwater streams 最初的融水溪流
But just as life got used to colder, drier conditions, 但就在生命逐渐适应 更寒冷、更干燥的条件时
as well as a crucial part of our story. 也与我们有一段共同的经历
With most of the world's water locked up as ice, 世界上大部分水被冰封
as grass is hard to find beneath the snow. 因为冰雪之下很难找到草