淡水海绵 dànshuǐhǎimián freshwater sponge Definitions Defs Origin Strokes Stroke Words Sentences Sents 淡水 dànshuǐ noun fresh water potable water with low salt content that is suitable for drinking and household use海绵 海綿 hǎimián noun sponge primitive multicellular aquatic animal of the phylum Porifera, or its dried fibrous skeleton
