At these latitudes the sun's rays are glancing 在这个高纬度地区 太阳辐射只能斜射到这片土地
and not enough of their energy reaches the ground to enable trees to grow. 到达地面的能量很少 并不足以支持树木生长
but it can outrun the wolf if only it manages to keep its footing. 但如果全速奔跑起来 它仍可以比狼跑得更快
either the caribou will make a mistake 一是驯鹿自己犯下错误
or after a mile the wolf will give up. 否则就是狼追出1英里之后选择放弃