staircase

名词 staircase:

1. a way of access (upward and downward) consisting of a set of steps
   同义词：stairway

1. A vertical support at the center of a circular staircase.
   螺旋楼梯中柱环行楼梯中间的垂直支撑
2. We must redecorate the staircase.
   我们得把楼梯重新装饰一下。
3. You can go up the staircase on the right.
   你可以从右边楼梯上去。
4. We heard his heavy tread on the staircase.
   我们听到了他走在楼梯上沉重的脚步声。