0n temperate plains around the world, summer is a time for growth and reproduction. 在世界各个温带地区的草原上 夏季都是生长繁殖期
and the grass here can support herds all year round. 能够全年维系所有的动物群落的食物需要
In high summer, the bulls are fat from the rich grazing 在盛夏 公野牛个个吃得胖乎乎的
And a century ago, the bison were reduced to barely 1,000. 一百年前 野牛的数量曾锐减至不到一千
Now, thanks to rigorous protection, the species is recovering. 如今 幸亏制定了严厉的保护 这一物种的数量才得以逐步恢复
or the destruction of its habitat. 野牛的栖息地也惨遭破坏
This rich pasture once supported the greatest herds ever seen on our planet. 这里的大草原肥沃甘美 曾经养育着地球上最大的动物群落