sponging
/spʌndʒ/
动词
白吃，白要；（尤指）吃白饭
sponging off the state
靠国家来养活
用湿海绵（或湿布）擦，擦洗
Most food stains will come off if you sponge the material with a little detergent.
用一点去污剂能去除布料上的大部分食物污渍。
/spʌndʒ/
名词
（擦洗物品用的）海绵
Give it a sponge with a damp cloth - that will remove the mud stains.
用湿布擦一下就可以去掉泥渍。
海绵蛋糕