Running directly at the herd is a ploy to generate panic. 直冲向鹿群是一种制造恐慌的战术
Some herds travel over 2,000 miles a year in search of fresh pastures. 有的鹿群一年得走上2000多英里 才能到达新鲜草场
for a few miles from the coast the ice is already splitting. 离岸几英里远的海面上 冰层已经开始崩裂
but she's leading her cubs into a dangerous new world. 而它也正带着熊崽们 进入一个危险的新世界
and the mother has led her cubs a mile from the den. 母熊已经带领幼熊离巢1英里远
but also a problem for the mother. 但对母熊而言却是一个问题
a single egg rested on the top of its feet 一颗躺在它们脚背上的蛋