a pair of steps

• 四脚梯,折梯

a pair of steps的用法和样例：

例句

1. There is a pretty portable pair of steps in one corner of the room.
   屋角放着一架小巧玲珑的折梯。
2. Never buy a real man a stepladder.It must be an extension ladder.
   不要给一个真正的男人买折梯，而得买加长梯。