Even in thick snow, bison can run at up to 35mph.
即使在厚重积雪中,野牛最高也能以时速35英里奔跑。
The lead female wolf leads the chase.
领头雌狼带头追击。
A kick from a bison's hind leg could shatter herjaws.
被野牛的后腿踢中就可能击碎它的下颚。
But the pack must feed, and they take turns to attack.
可是狼群必须进食,它们轮流攻击。
The bison head for cover.
野牛冲向掩蔽处。
The deep snow slows down both attacked... and attacker.
深雪使得遇袭者与袭击者双方都慢了下来。
The herd splits into two. But the wolves are far from giving up.
牛群一分为二。但狼群可不打算就此放弃。
Hours pass. The thicker vegetation has turned a straightfonnard chase... into a deadly form of hide and seek.
经过了许久。浓密的植被使得笔直向前的追逐,变成一种致命的躲藏与追捕。
Discovered. The lead female manages to chase the smaller group into the open.
被发现了。领头雌狼设法将较小的牛群追至开阔处。
But here the bison are able to close ranks once again.
可是到了这里野牛也能再次围成防线。
The leading wolves wait for the rest of the pack to catch up.
领头狼夫妇等待其他成员赶到。
The super-pack is once again at full strength.
超级狼群再次全员到齐。
Suddenly, two of the bison panic. It's just what the wolves have been waiting for.
突然间,两只野牛惊慌窜逃。这正是狼群期待的结果。
One of the bison is tiring.
其中一只野牛累了。
The lead female gets a grip on its flanks. The male joins her.
领头雌狼一口咬住它的侧面。雄狼也加入攻势。
Together, they might be able to bring it down. The rest of the wolves catch up and help.
双狼合作或许就能将它制伏。其余的狼赶来助阵。
After eight long, hard hours, the hunt is coming to an end.
经过了漫长辛苦的八小时,猎杀终于来到尾声。
Victory is sounded to summon the rest of the pack.
胜利的嚎叫召唤剩余的狼群。
A single wolf wouldn't stand a chance of making such a kill by itself.
单一只狼不可能只靠自己猎到这等丰收。
The only way they have of surviving the winter is as a super-pack.
它们度冬的唯一方式就是组成超级狼群。