有一对兄弟,他们的家住在80层楼上。有一天他们外出旅行回家,发现大楼停电了!虽然他们背着大包的行李,但看来没有什么别的选择,于是哥哥对弟弟说,我们就爬楼梯上去!于是,他们背着两大包行李开始爬楼梯。爬到20楼的时候他们开始累了,哥哥说:“包包太重了,不如这样吧,我们把包包放在这里,等来电后坐电梯来拿。”于是,他们把行李放在 A brother, their family lives on the 80th floor. One day they went home for a trip and found that the building had a power outage! Although they were carrying large bags of luggage, they seemed to have no other choice, so my brother told his younger brother that we were going up the stairs! So they carried two large Baggage began to climb the stairs. Climbed to the 20th floor when they began to get tired, my brother said: “The bag is too heavy, so be it, we put the bag here, and so on after the call to take the elevator. ” So they put the luggage on