He saw, once for all, that he stood no chance against a man with a club. He had learned the lesson, and in all his afterlife he never forgot it. That club was a revelation. It was his introduction to the reign of primitive law, and he met the introduction halfway.

他一次就学明白了，面对手持大棒的人，自己没有丝毫胜算。巴克已经得到了一次教训，在他以后的生命里，他永远不会忘记这一教训。那根大棒就是一个启示。它带他认识了原始定律的统治，巴克在生命中途才认知这些。

His muscles became hard as iron, and he grew callous to all ordinary pain. He achieved an internal as well as external economy. He could eat anything, no matter how loathsome or indigestible; and, once eaten, the juices of his stomach extracted the last least particle of nutriment; and his blood carried it to the farthest reaches of his body, building it into the toughest and stoutest of tissues. Sight and scent became remarkably keen, while his hearing developed such acuteness that in his sleep he heard the faintest sound and knew whether it heralded peace or peril. He learned to bite the ice out with his teeth when it collected between his toes; and when he was thirsty and there was a thick scum of ice over the water hole, he would break it by rearing and striking it with stiff fore legs. His most conspicuous trait was an ability to scent the wind and forecast it a night in advance.

他的肌肉变得像钢铁一样坚硬，而且对于一般的痛苦他都已经麻木了。他不仅获得了内部的，也获得了外部的经济利益。他能吃下任何东西，不管这东西有多恶心或难以消化。只要他吃下这东西，胃液就能从中抽出最后一分营养物。而他的血液会把这些营养输送到身体最边缘的部位，构造出最坚韧、最结实的组织。他的视觉和嗅觉变得异常灵敏，听觉敏感到连睡梦中都能听到最轻微的声音，还能辨别出这声音预示的是安全还是危险。他学会了用牙咬掉结在趾间的冰块；当他口渴但水面洞口上有一层厚厚的冰渣子时，他会扬起前腿直立起来，用那坚硬的前腿把冰渣子扒开。他最大的特点就是能嗅出风向，并提前一个晚上给出预报。