楼梯有一个坚固的扶手以确保安全。

The staircase has a sturdy hand ___rail for safety.

在浴室安装扶手可以防止摔倒。

Installing hand ___rails in the bathroom can prevent falls.

火车移动时，她紧紧抓住栏杆。

She gripped the ___rail tightly as the train moved.