a structure made of stone or brick that sticks out from and supports a wall of a building

to build buttresses to support a building or structure

It was decided to buttress the crumbling walls. 人们决定建造扶壁以支撑将要倒塌的墙。

to make support for an idea or argument stronger by providing a good reason for it

The arguments for change are buttressed by events elsewhere. 其他一些地方的事件肯定了关于变革的想法。