Because it's quite hard to waterproof buildings anyway, but if you say you're going to drill 66,000 holes in it -- we had quite a time.
왜냐하면, 어떤 건물이든 방수작업을 꽤나 힘이드는데요, 건물에 6만6천개의 구멍을 뚤어야 한다고 말한다면 정말 고생이 이만저만이 아니겠죠