sponges

Sponges absorb water.

海绵吸水。

His 30-yesr-old druggie doesn't work and sponges off his mom by making promises he never keeps.

30岁毒虫不工作，靠母亲养活，总作没实现承诺。

Recently, many polyhydroxylated sterols with different biological activities have been found in the soft corals，sponges，algae and star fish．Zeng L.

近，软珊瑚，海绵，海藻和海星中都发现不少有生理活羟基甾醇。