一种矾根属植物（珊瑚钟矾根属）原产于美国西南部及墨西哥。
A species of alumroot (Heuchera sanguinea) was native to the southwest United States and Mexico.
珊瑚礁由珊瑚虫所组成，珊瑚虫是一种水母属的动物，它同海藻在一起称为虫黄藻。
A coral reef consists of coral polyps, which are animals in the jellyfish family, along with algae called zooxanthellae.
其实珊瑚一词所指的动物甚多，包括大多数属珊瑚虫纲及数动属水螅虫纲的刺胞动物。
Actually, the term coral is much broader and refers to most of the animals in the class Hydrozoa of the Phylum Cnidaria.
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