그래서 다윈은 도대체 왜 암컷에게 회음이 발달했는지 이해할 수 없었던거죠. 그냥 둘이서 짝짓기를 하면 되는 것이잖아요, 그죠?
So he couldn't understand why on Earth would the female have developed this thing if all they were supposed to be doing is forming their pair bond, right?