pumice stone

US /ˈpʌm.ɪs stoʊn/
UK /ˈpʌm.ɪs stoʊn/
"pumice stone" picture
1.

浮石

a very light, porous volcanic rock used as an abrasive, especially for scrubbing and polishing

:
She used a pumice stone to smooth her rough heels.
她用浮石磨平粗糙的脚后跟。
The artist used powdered pumice stone to create a textured surface on the canvas.
艺术家使用浮石粉末在画布上创造出纹理表面。