词
维的，Coral reefs are rocklike structures built by layers of coral organisms, called polyps.
礁由组织（虫）层层相叠形成，类似岩石。
Coral reefs are rocklike structures built by layers of coral organisms, called polyps.
礁由组织（虫）层层相叠形成，类似岩石。
声明：以上例句、词性分类均由互
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