珊瑚岩是一种细小无害，蛇状，叫作珊瑚虫的生物的排泄物，外形像海绵。
The excretion of a small, harmless, snake-shaped creature known as the coral grubb, coralite is spongelike in appearance.
岩尖炎通常不会强化，然而、海绵窦强化可以出现。
Apicitis generally does not enhance, however, cavernous sinus enhancement may be seen.
广泛发育于我国南方碳酸盐岩台地区的二叠纪生物礁，其中绝大多数属于海绵生物礁。
The Permian organic reefs, most of them belong to sponge reefs, which are widely developed in the carbonate platform areas of the South China.
广泛发育于我国南方碳酸盐岩台地区的二叠纪生物礁，其中绝大多数属于海绵生物礁。
The Permian organic reefs, most of them belong to sponge reefs, which are widely developed in the carbonate platform areas of the South China.
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