石珊瑚
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Because it was underwater 30 million years ago, the cave is made from limestone composed of fossilized shells, skeletons and coral.
因为3亿年前山洞是在水底的，山洞总的石灰石里有许多的贝壳，骨骼和珊瑚化石。
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Small leaves happily lying coral reef cave to sleep.
小树叶快乐地躺在珊瑚礁洞里睡大觉。
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