Cách sử dụng
Staircase is a word that we use to describe a set of steps that lead up or down between different levels of a building. It is like a ladder made up of steps that you can use to go up or down a building, like in a house or an office building. For example, if you want to go from the ground floor to the second floor of a building, you would use the staircase. Staircases can be made of different materials such as wood or metal, and can be indoor or outdoor.