The developmental history of the society tells us that man has evolved from the ape.

社会发展史告诉我们人是从类人进化来。

Chimpanzees and gorillas are both apes.

黑猩猩和大猩猩都是类人。

Quickly I could see that 15 teeth were those of Gigantopithecus, and 10 were probably Pongo.

，我发现15牙齿是，而10可能是类人。

Men are descended from ape-men.

人是由类人转变而来。