名词
1. stair的意思
1. The master's room is upstairs, but to get to the library you must go downstairs. 校长的房间在楼上,但是到图书馆去你必须下楼。
2.
2. We climbed the winding stairs to the tower. 我们爬上通往塔楼的盘旋的楼梯。