The two children enjoyed travelling on the tube railways and going down the moving stairs which lead to the platforms.

两个孩子喜欢乘坐地铁，让活动电梯把自己送到站台上去。

youdao

They were all moving toward him down the stairs.

他们都正朝着他走下楼梯。

《柯林斯英汉双解大词典》

They also have difficulty with stairs and descend feet-first. However, researchers also report seeing quadrupeds' running ', moving agilely over rough terrain and travelling long distances.

他们上下楼梯也有困难，下楼时，用脚先下楼。但是，研究者们也报道说看到过他们“奔跑”，灵活地越过不平的地形，奔跑很长一段距离。

youdao

Clearly, there was no need to make this a lighthouse, but even before ascending to Columbia, I am climbing stairs, moving upwards.

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