noun, conjunction · a soft, porous, absorbent material made from synthetic polymers or cellulose, such as foam rubber, used for cleaning or padding

请给我一块海绵来擦掉桌子上的水渍。

noun · a primitive aquatic multicellular animal of the phylum Porifera, or its dried porous skeleton

科学家在深海发现了一种新型的海绵。