一栋楼房 meaning in Chinese

a building

And what ' s that building outside the window
窗外那一栋楼房是什么呢？
The objective is to make a building , an architectural project
目标是创建一栋楼房，一个建筑项目。
And suddenly brother a . came up , and taking me by the arm , led me away with him and brought me into a building , to enter which we had to pass over a narrow plank
忽然师兄a走来，挽起我的一只手，领着我向前走去，又把我领到一栋楼房前面，只有沿着一条狭窄的木板才能走进这栋楼房。
Suppose our house has many levels but if we have never ascended the stairs to see the higher levels , then of course , we do not know how much we have and how many rooms we have in our house
譬如我们有一栋楼房，但是如果从来不上楼去看，当然就不会知道这栋楼房里有多少宝藏和多少房间。