但是不要忘记，他花了15年时间学习狼的语言和习性，并且这些知识可以使他保全性命。

But he's spent 15 years studying Wolf language and behavior, and that knowledge is what keeps him alive.

youdao

但是不要忘记，他花了15年时间学习狼的语言和习性，并且这些知识可以使他保全性命。

But he's spent 15 years studying Wolf language and behavior, and that knowledge is what keeps him alive.

youdao