They're the only animals that can. 只有它们有这个能力

250. This tradition goes back over 400 years.
     这个传统已经持续了四百多年
251. The human butchers put out the bones they don't need
     屠夫们会把不要的骨头扔出来
252. and these hyenas deal with them.
     由这些鬣狗负责处理
253. They're the only animals that can.
     只有它们有这个能力
254. No other here has such powerful bone-crushing jaws.
     其他动物的咬合力不足以咬断骨头
255. And this relationship between man and beast
     人类与野兽的这种关系
256. has now been taken a step further.
     如今已经发展到了新高度

来自《行星地球 第二季 第六集 Planet Earth S02E06 城市》第 253 行