%EA%B2%BD%EC%A3%BC%EC%98%A4%ED%94%BC%E3%8E%B2%20%E3%80%90optop10%CB%9Bc%CE%98%D0%BC%E3%80%91%E2%99%A6%EA%B2%BD%EC%A3%BC%EC%95%84%EB%A1%9C%EB%A7%88%E2%9C%BD%EA%B2%BD%EC%A3%BC%EC%98%A4%ED%94%BC%20%EA%B2%BD%EC%A3%BC%EC%95%88%EB%A7%88%20%EA%B2%BD%EC%A3%BC%EC%85%94%EC%B8%A0%EB%A3%B8%20%EA%B2%BD%EC%A3%BC%EA%B1%B4%EB%A7%88