However, chimpanzees are highly endangered species, and size large, easy on the breeding and fed, expensive and difficult as the animal model for AIDS Research.

然而，黑猩猩是高度濒危物种，而且体型巨大，不易于繁殖和豢养，费用昂贵，难以作为艾滋病研究动物模型。

youdao

However, chimpanzees are highly endangered species, but also a great size, easy breeding and rearing, the cost of expensive, difficult to study as an animal model of AIDS.

然而，黑猩猩是高度濒危物种，而且体型巨大，不易繁殖和养育，费用昂贵，难以作为艾滋病研究动物模型。

youdao

But the country's enigmatic, difficult to spot and little known species are also highly endangered.

但是，这个国家神秘的、罕见的和鲜为人知的物种也受到了威胁。

youdao

Both she and Ryder say that there is no international policy calling for cloning and preservation of highly endangered species.

MSN: Should we have cloned rare tortoise Lonesome George?

No one seemed interested that the quota for skins for that 'highly endangered species' for that year was 1, 000, 000 from Argentina alone.

BBC: Animal Underworld

Leatherback turtles are a highly endangered species.

BBC: New law to protect Puerto Rico leatherback turtles