like a sponge, especially in being porous, compressible, elastic, or absorbent (尤指在多孔、可压缩性、弹性及吸水性方面)像海绵的 a soft, spongy blanket of moss. 一层柔软的,像海绵般的青苔。 ■(of metal) having an open, porous structure (金属)多孔的 spongy platinum. 多孔铂。 ■(chiefly of a motor vehicle's braking system) lacking firmness (尤指机动车辆的制动系统)不稳固的