Penny, half way up the moving stairway, tried to save her from a hard fall.
Down the girl went, and as she fell, the contents of her pocketbook spilled out upon the moving stairway.
If Skyhigh Sam could see you now hed go and invent a moving stairway for the equator just for spite.
He had not supposed that a moving stairway went further than one story, and the thought of riding to the sixth floor was bliss.
By leaning back on the rope I walked up the slope as easily as if it were a moving stairway.