珊瑚石：珊瑚石，珊瑚是一种生活在海洋里体态玲珑，色彩高雅的腔肠动物，名曰珊瑚虫。
Coral rock: coral rock, coral is a kind of life in the sea posture is exquisite, colour elegant coelenterate, called polyps.
水螅型珊瑚虫，水螅虫一种有柱状身体和通常被触角包围的口部开口的腔肠动物，比如水螅或珊瑚虫。
A coelenterate, such AS a hydra or coral, having a cylindrical body and an oral opening usually surrounded by tentacles.
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