cotton wool

n.药棉; 脱脂棉 牛津词典 noun 药棉；脱脂棉a soft mass of white material that is used for cleaning the skin or a woundcotton wool balls药用棉球 柯林斯词典 (尤指在皮肤上擦液体或护肤霜时用的)药棉，脱脂棉Cotton wool is a soft mass of cotton, used...