pumice stone

1. 浮石，浮岩，轻石（用于清洁皮肤或使皮肤光滑等）
   A pumice stone is a piece of pumice that you rub over your skin in order to clean the skin or make it smoother.
2. 同pumice
   Pumice stone is the same as pumice .

1. The pumice stone resembles a bar of soap.
   这种浮石就像一块肥皂。
2. After soaking the wart in water and gently scrubbing it with pumice stone, the procedure was repeated for up to two months, or until the wart disappeared.
   在水中浸泡疣后，用浮石轻轻擦拭其表面，这样坚持2个月，或直到疣消失。

noun

1. a light glass formed on the surface of some lavas

   Synonym:    pumice