steel string stair

例句：

1. 1. The steel string stair is a popular choice for people who love to climb.
   钢索楼梯是那些喜欢攀爬的人的热门选择。
2. 2.The steel string stair was designed to be easy to use and safe for the elderly.
   钢索楼梯被设计成易于使用且对老年人安全。
3. 3. The steel string stair is often used in hospitals and nursing homes to provide accessibility for the disabled.
   钢索楼梯常用于医院和养老院，为残疾人提供便利。