White rhinos are one of the largest land mammal species and can weigh up to two tons.

白犀牛是最大的陆地哺乳动物之一，能够重达2吨。

There are two sub-species of white rhinoceros, northern white rhinos and southern white rhinos.

白犀牛有两个亚种，北方白犀牛和南方白犀牛。

Then white rhinos are really on the brink of extinction.

到时候白犀牛就真的濒临灭绝了。

There are now thousands of southern white rhinos.

现在这里有数千头南部白犀牛。

White rhinos enjoy grazing in open spaces, so visiting tourists can expect to get a good look.

而白犀牛喜欢在户外吃草，想必到访的游客应该能大饱眼福。

Conservationists flew 30 white rhinos from South Africa to Rwanda.

环保人士将30头白犀牛从南非空运到卢旺达。

Southern white rhino males can either be dominant or subordinate.

雄性南方白犀牛既可以是主导者也可以是从属者。

The last male northern white rhino was a 45-year-old named Sudan.

最后一头雄性北白犀牛是一头45岁的犀牛，它的名字叫苏丹。

The two remaining female northern white rhinos, Najin and Fatu, live in Kenya.

剩下的两头雌性北白犀牛纳金和法图生活在肯尼亚。

They're the two only northern white rhinos, which is distinct from the southern white rhinos because they have shorter legs, heavier ears.

他们是仅存的两只北白犀牛，与南方白犀牛截然不同，因为它们的腿更短，耳朵更重。

There are only about 20,000 southern white rhinos remaining, considered near threatened.

目前仅存的大约2万头南方白犀牛仍然时刻处于被盗杀的危机之中。

Scientists are looking into the possibility of saving the northern white rhino through in-vitro fertilization.

科学家们正在对通过体外受精挽救北白犀牛物种的可能性进行研究。

And we were able over the years to bank the cells of 12 Northern white rhinos.

多年来，我们保存了 12 头北方白犀牛的细胞。

Ultimately, what we intend to do is to produce Northern white rhinos in the lab.

最终，我们打算在实验室里培育出北方白犀牛。

They will be put into a surrogate mother — a southern white rhino — in the coming months.

在接下来的几个月里，它们将被放入代孕妈妈——一只南方白犀牛的体内。

The Northern white rhino is a wonderful example because the world is watching a species go extinct.

北方白犀牛是一个很好的例子，因为世界正看着一个物种走向灭绝。

The white rhino, which is the largest, may grow as long as 13 feet or 4 meters.

体型最大的白犀牛可以长至13英尺或4米。

The white rhinos are going to be seen in the open spaces by almost all the tourists.

几乎所有的游客都能在空地上看到白犀牛。

If something happened to Kenya or to South Africa on this scene of white rhinos, that is where the majority of white rhinos are.

如果肯尼亚或南非发生变故，要知道那里是大部分白犀牛生活的地方。

And the fact that the Northern white rhino is really teetering on the brink of extinction.

事实上，北方白犀牛正处于灭绝的边缘。