My words were lost as the walls above us crashed down, filling the cellar with brick dust.

随着上面的墙体轰隆一声倒塌下来，地窖里充满砖灰，我吓得说不出话来。

《柯林斯英汉双解大词典》

That brick dust at the door, how does it work?

我看到门口的砖屑那有什么讲究吗？

youdao

The effect of applying polishing brick dust as one of cement admixture on cement properties was studied.

研究了陶瓷抛光砖粉作水泥混合材对水泥相关性能的影响。

youdao

In the foot-well and the wheel arches, scientists found traces of a distinctive mix of chalk, brick dust and concrete used to cover the road leading to the ditch.

BBC: Holly Wells and Jessica Chapman

There is no hint of brick-dust whatsoever beneath Ash's well-shaped finger nails.

ECONOMIST: New verse