therm%ED%94%84%EB%A1%9C%EA%B7%B8%EB%9E%A8%EC%97%90%EC%84%9C %EC%9E%90%EA%BE%B8 boundary overlap %EB%90%AC%EB%8B%A4%EA%B3%A0 %ED%95%A9%EB%8B%88%EB%8B%A4.