珊瑚礁

wèi zāo pò huài de shān hú jiāo huán rào zhe hǎi wān

未遭破坏的珊瑚礁环绕着海湾。

An unspoilt coral reef encloses the bay.

shān hú jiāo shì yóu xǔ duō xiāng tóng de wēi shēng wù bù duàn duī jī ér chéng

珊瑚礁是由许多相同的微生物不断堆积而成。

A coral reef is built by the accretion of tiny, identical organisms.