But we also found an enormous number of critically endangered species.

但是我们同时也发现了大量物种濒临绝种。

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Zoos of various kinds are justifying their existence by providing a lifeline for the existence of critically endangered species.

各种动物园为极度濒危物种提供了生命保障，这证明了它们的存在是有道理的。

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Mediterranean monk seals are one of the most critically endangered species on Earth, with less than 600 seals remaining in the wild.

地中海僧海豹是地球上最濒危的物种之一，现存野生个体不到600只。

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That leaves the situation "extremely precarious" for the critically endangered species, she said.

CNN: Rare gorillas threatened by rebels

The cheetahs are part of the European Endangered Species Programme (EEP) at the zoo, which looks to increase the number of the critically endangered species.

BBC: North African cheetahs born at Whipsnade Zoo

Over the last seven years 33 black rhinos have been born in the foundation's parks and members of the critically endangered species have been returned to the wild.

BBC: Black rhino threat: Poachers target Kent wildlife parks