Officials at Port Lympne were delighted with the new arrival, especially as black rhinos are known for being difficult to breed in captivity.
林姆尼港的官员们对新生命的到来都感到十分开心，特别是因为黑犀牛以难以圈养而闻名。
Giant panda cubs are rare, as it is hard to get pandas to breed in captivity.
由于圈养的大熊猫繁殖能力不强，所以大熊猫幼仔是极为罕见的。
It is susceptible to various diseases, and, up until recently, it has been almost impossible to breed in captivity.
熊猫容易感染各种疾病，直到最近，它一直都很难通过人工饲养繁殖。
The future of slender-billed vultures in India may lie with the first of their kind to breed in captivity following a 97% crash in the species population since the 1990s - or it may not.
印度尖嘴秃鹰的未来也许取决于首次尝试的人工繁殖，自从1990年以来，它的数量已经减少了97%。
'Pandas used to be really difficult to breed in captivity, but the Chengdu base and other zoos around the world have cracked the problem and now there are around 400 in captivity,' Mr Marven said.
“过去，大熊猫很难进行圈养，但是经过成都熊猫基地和世界各地许多动物园的通力合作，人类已经攻克了这个难题。目前世界上已经有了将近400只人工大熊猫。”马文如是说。
Cheetahs breed very poorly in captivity.
猎豹在圈养的情况下繁殖力很差。
The university, with the help of Germany's Leipzig zoo, is leading a project to breed amphibians in captivity.
在德国莱比锡动物园的帮助下，该大学正在主持一个圈养繁殖两栖动物的研究项目。
Nor does anyone know how to breed eels in captivity.
也没有人知道如何人工饲养繁殖鳗鱼。
A safari park in Britain was celebrating the birth in captivity of one of the world's rarest breed of giraffes — its second such success in four years.
英国一家野生动物园日前为该园中饲养的一种世界上最为珍稀的长颈鹿品种的成功产子举行了庆祝活动，这是该动物园4年之中第二次迎来可爱的长颈鹿宝宝。
Wild animals don't breed well in captivity.
野生动物圈养时不好繁殖。
Wild animals don't breed well in captivity.
圈着的动物繁殖不好。
But I also need animal protein, so I learned to breed insects, spiders, and rodents and to make them reproduce in captivity;
可我还需要动物蛋白，于是我学会了饲养各种各样的昆虫、蜘蛛和啮齿动物，并把它们关起来让它们繁殖；
But I also need animal protein, so I learned to breed insects, spiders, and rodents and to make them reproduce in captivity;
可我还需要动物蛋白，于是我学会了饲养各种各样的昆虫、蜘蛛和啮齿动物，并把它们关起来让它们繁殖；
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