We've talked earlier -- this wonderful talk by Wade Davis about the different cultures of the humans around the world -- but the world is not composed only of human beings; there are also other animal beings.
我们早先谈过——在韦德·戴维斯的精彩演讲中， 谈到了世界上不同种族的文化。 但这个世界，不仅仅是由人类组成的， 还有其他动物的存在。