Quick, name the world's largest carnivorous marsupial.

快说上最大食肉有袋动物名字。

Unlike bears, koalas are a special kind of mammal called 'marsupials.'

和熊不同是，考拉是一种叫有袋类特殊哺乳动物。

See how some folks are dedicating their time and energy to keeping these marsupials safe.

看看有些人是如何投入他们时间和精力来保护这些有袋动物安全。

His dad, on the other hand, is one of the heaviest marsupials in the world.

而它父亲，则是上最重有袋类动物之一。

It's the only North American marsupial.

这是北美唯一一种有袋类动物。

But unlike most other marsupials, koala pouches open toward the bottom.

但与其它多数有袋动物不同是，考拉袋开口是向下。

Until the 1980s, zoologists feared that the koala might go the way of some other rare marsupials.

一直到80年代，动物学家们都还很担心考拉可能会步上其它一些稀少有袋动物后尘。

That's how they would have known about marsupials.

这就是他们了解有袋动物。

And it's revealing all sorts of insights into these adorable Australian marsupials.

它揭示了对这些可爱澳大利亚有袋动物各种见解。

Marsupial offspring spend ample time in the mother's nurturing pouch drinking milk.

有袋动物后代在母亲育儿袋中度过充足时间喝牛奶。

You're basically seeing something very much like the Australian marsupial called the swamp wallaby.

你基本上看到是一种非常像澳大利亚有袋动物东西，叫做沼泽小袋鼠。

Second, OK, there's a picture of a marsupial in the 1593 book published in Europe.

其次，好吧，欧洲版 1593 年书中有一张有袋动物图片。

Because of this they have become Australia's most commonly seen marsupial.

因此，它们已成为澳大利亚最常见有袋动物。

McElligott rounded up a group of marsupials from three different zoos and sanctuaries.

McElligott 召集了一群人来自三个不同动物园和保护区有袋动物。

Second, OK, there's a picture of a marsupial in a 1593 book published in Europe.

其次，好，1593 年在欧洲版一本书中有一张有袋动物照片。

They had heavy stiff tails, large heads and were the world's largest marsupial carnivore.

它们有沉重而僵硬尾巴，大头，是上最大有袋类食肉动物。

Well, they may have also encountered the largest marsupial to ever live!

好吧，他们可能还遇到了有史以来最大有袋动物！

And just so we're clear the koala bear is not a bear. It's what is called a marsupial.

只是为了让我们清楚考拉熊不是熊。这就是所谓有袋动物。

Statements regarding marsupial immune system deficiencies do not hold much merit as marsupial immune systems are quite well developed.

关于有袋动物免疫系统缺陷说法没有多大价值，因为有袋动物免疫系统已经相当发达。

There are enormous marsupials, giant kangaroos with a single claw on each hindfoot, and lion-like creatures.

有巨大有袋动物、每只后脚各有一个爪子巨型袋鼠，以及类似狮子生物。