在大型动物，这是很容易-照片看看左边，你会看到这是毫无疑问的是男是女。

In big animals, this is very easy - look at the photos to the left and you will see there is no doubt which is male and which is female.

youdao

在大型动物，这是很容易-照片看看左边，你会看到这是毫无疑问的是男是女。

In big animals, this is very easy - look at the photos to the left and you will see there is no doubt which is male and which is female.

youdao