爬楼梯用英语怎么说?要能体现出爬高层的艰辛感觉的搭配~爬很高的楼```动词可以用CLIMB "高"应该用什么呢?

爬楼梯:Block and Ladder
例：
1.电梯故障了.我们必须爬楼梯了.
The elevator is out of order.We've got to go up the stairs.
2.为保持健康,我爬楼梯而不坐电梯.
To keep fit,I climb the stairs rather than take the elevator.
3.爬楼梯对于心脏衰弱的人是个负荷.
Climbing stairs is a tax on a weak heart.