the cost to the company of that one disappointed customer is difficult to pin down / pin it down, to be sure , but nonetheless it is substantial.
에서 답은 pin down인데 그 이유가 the cost to the company of that one disappointed customer 가 목적어이기 때문이라고 해답에 나와있네요ㅠㅠ왜 저 구가 목적어이면 pin down 안에 대명사인 it 못 들어가고 그냥 pin down이 되는거죠?제발알려주세요ㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠㅠ