Death Valley is the hottest place on Earth. 死亡谷是地球上最热的地方
So how on earth does a plant-eater this size survive in a place apparently totally devoid of vegetation? 那么在地球上 如此巨大的植食动物是如何 在这个寸草不生的地方生存的呢
Even in the shade the earth is baking hot 即使是在树荫下 土地照样被烤得火热
These great scars on the face of the Earth appear to be lifeless, 这些地球脸上的大伤疤看似毫无生机
are possibly the most specialised creatures on Earth 可能是地球上最奇特的动物
Caves are one of the few habitats on Earth not directly powered by sunlight. 洞穴是地球上少数几种 不直接依赖阳光的生态环境之一
Today caves remain the least explored places on Earth. 今天 洞穴仍是地球上 人类最少涉足的地方
their fresh water has brought life and abundance to planet Earth. 淡水为地球带来了无数生机与富饶
80 percent of its species are found nowhere else on Earth, 湖里80%的物种 在地球上其它地方都不存在
But each year over 50,000 demoiselle cranes set out on one of the most challenging migrations on Earth. 可是 5万多只蓑羽鹤每年都会 进行一场地球上最具挑战性的迁徙