4-08. %EC%A7%80%EB%B6%95%EC%9D%98 %EB%8B%A8%EC%97%B4 - %EC%BD%98%ED%8A%B8%EB%A6%AC%ED%8A%B8 %EA%B2%BD%EC%82%AC%EC%A7%80%EB%B6%95