This forest covers only 3 percent of the planet's surface, 这些森林仅覆盖了地球表面的3%
And it's this tilt that creates the seasons. 正是这种倾斜造成了季节变化
The future of an entire species hangs on survival of a tiny number of mothers like this one. 整个物种的未来寄托在为数不多的几只母豹身上 就好比这一只
This vast forest circling the globe 这片环绕着地球的广大森林
so this forest supports very little animal life. 所以生活在这片森林里的动物非常稀少
This is the longest overland migration made by any animal. 这是动物界中最长的陆地迁徙
who's delayed feeding them on this special day. 在这个特别的日子里 母熊已经推迟了喂奶的时间
but this steep slope is not the easiest place to take your first steps. 但在这个陡峭的斜坡上 踏出第一步可不太容易