But before we pat ourselves too much on the back, we have poured 151 megawatt hours of energy into constructing this house when there was a house there before.
但是在我们过多拍我们自己的 后背以表彰我们自己之前， 我们已经消耗了151千瓦时 去建造这个房子， 当那儿之前有一座房子。