Clean the plastic cover with a damp sponge, then dry it off with a soft cloth.用湿海绵把塑料盖擦干净，然后用一块柔软的布把它擦干。Don't immerse it in water; just sponge it lightly.别把它泡在水里，用湿海绵轻轻擦拭即可。The mother sponged crayon marks off the wall.母亲用湿海绵擦去了墙上的蜡笔痕迹。Wipe the surface with a damp sponge.用湿海绵擦拭表面。