A mother grizzly emerges from her den 灰熊妈妈正走出巢穴
This huge mountain chain continues the great spine that runs from Patagonia to Alaska. 巨大的山系脊梁从巴塔哥尼亚 一直延伸到阿拉斯加
This vast range stretches 5,000 miles from the Equator down to the Antarctic. 这座巨大的山脉 从赤道向南极绵亘5000英里
but this is a special alliance from which both partners benefit. 但是这种特殊联盟能使双方都得到好处
Molten lava rising from the earth's core 熔岩从地核中漫涌上来
where giant land masses are pulling away from one another. 巨大的陆地板块在此互相分离
The water drives out insects from the parched ground, 水将燥热土壤中的昆虫驱赶出来
Finally, the stragglers emerge from the dust. 最后 掉队者终于从尘埃中走了出来
Females and calves can easily get separated from the main herd. 母象和小像一不小心就会和大部队分开
but its distribution over the land is far from even. 不过 水在陆地上的分配极不平均