然而，很多海洋生物的骨骼由一种叫作霰石的碳酸钙矿物变体组成。
In many marine creatures, however, the skeleton is composed of a mineral variety of calcium carbonate called aragonite.
合成出六边形板状结构、陀螺形、花生形等形貌新颖的球霰石。
Novel morphologies of vaterite, including hexahedron plate-shaped, top-shaped, and peanut-shaped were found.
珊瑚虫也将如此，特别是那些骨架由霰石(一种极不稳定的碳酸钙形式)组成的种类。
So will corals, especially those whose skeletons are composed of aragonite, a particularly unstable form of calcium carbonate.
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