Sponge is a substance that absorbs water. There are many tiny holes on
the sponge that help to absorb water. Besides the sponge, we can use other
materials to absorb water.
海绵是一种能够吸水的材料。在海绵上有很多小孔洞,所以吸水能力很强。我们就用专门来吸水。除了海绵,我们在日常生活中也会用到其它一些会吸水的材料。
Some examples are/ 例如: