它是固定在墙上的。

It is fixed on the wall.

《柯林斯英汉双解大词典》

摆脱了把艺术品固定在墙上的常规博物馆关系，曲面墙和自高处而下的光线使得地面上的艺术品像漂浮于空中。

Freed of a normal museum relationship of wall mounted works, the curving walls and the light from above enable the pieces on the floor to simply levitate.

youdao

为什么要每个月花35刀去装一架固定在墙上的电话呢?对那些今天出生的孩子们而言，这将是个无比愚蠢的想法主意。

Why would you pay $35 every month to have a phone that plugs into a wall? For those born today, this will be a silly concept.

youdao

I tie a spring to my back and I anchor it to the wall and see how much the spring stretches before the two forces balance.

我把弹簧一端系在背后,另一端固定在墙上,观察两个力平衡时弹簧的伸长量

耶鲁公开课 - 基础物理课程节选

You hook one end of the spring to a wall and you pull it from rest by some amount and you attach the one kilogram mass to it.

你把弹簧的一端固定在墙上,然后拉伸一段距离,接着你把 1 千克物体固定在上面

耶鲁公开课 - 基础物理课程节选