She ran her hand up its surface, expecting the ice to stop her. Instead, her hand encountered spongy material like packed snow.

她用一个手顺着木材往上抚过去，心想会被池塘表面的那层冰挡住，不意竟碰到像积雪一样的海棉似的东西。

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The spongy material found under your foot in many running shoes. A shock-absorbing material that's lighter than polyurethane(see PU).

在很多跑鞋中，都能在你的脚下找到的海绵状材料。是一种比聚氨酯（参见PU）轻的吸收震动的材料。

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Most blood cells, including red blood cells, are produced regularly in your bone marrow — a red, spongy material found within the cavities of many of your large bones.

红细胞内含有血红蛋白：这是一种富含铁元素的红色蛋白质，并赋予红细胞以红色。

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Of course, a device of that size also poses a number of problems, but Insound appears to have all those sorted out, with it employing a special "spongy material" that allows moisture to escape and prevent infection, and a magnet to actually remove the device from the ear.

ENGADGET: Insound's Lyric hearing aid cozies up right next to your ear drum