Beneath our feet are countless miles of cave shafts and passages. 我们脚下有着绵延不绝的洞窟和隧道
400 miles long and over a mile deep, Baikal contains one fifth of all the fresh water found in our planet's lakes and rivers. 贝加尔湖长400英里 深度超过1英里 其中淡水储量占到了全球江河湖泊淡水总量的1/5
Only 3 percent of the water on our planet is fresh. 地球上只有3%的水是淡水
Mount Everest, five and a half miles above sea level and still rising - the roof of our world. 海拔5.5英里的世界屋脊 ——珠穆朗玛峰仍在不断升高
On the highest summits of our planet 在地球上最高的地方
that stretches across a tenth of our planet - 这座山脉绵延长达地球圆周的1/10
They're the most powerful erosive force on our planet. 它是地球上最大的侵蚀作用
Volcanoes form the backbone of the longest mountain chain on our planet - 火山构成了地球上最长山系的主干
Human beings venture into the highest parts of our planet at their peril. 人类总是愿意冒着生命危险 占领地球上最高的地方
Nowhere on our planet is the life giving power of water so clearly demonstrated. 地球上没有其它地方能比这里 更能清楚地证明水对生命的意义