Right. As you know, Australia has many unique species of animals due to its long geographical isolation, such as kangaroos, wallabies, koalas, wombats, dingoes, possums, platypuses, spiny anteaters and so on.

好的。我们都知道，澳大利亚由于长期的地理隔离，有很多独特的动物物种，比袋鼠、沙袋鼠、袋熊、澳洲野狗、负鼠、兽、针鼹等。

After watching the platypus for a few moments, it seemed to disappear.

看一会兽，它似乎消失。

Only two kinds of mammals, the platypus and the echidna, lay eggs.

只有两种哺乳动物，也就是兽和针鼹鼠会产蛋。

Pretty sure this is the only color that platypus skulls come in.

我很确定兽头骨只有这种颜色。

You're probably underestimating the size of wombats, and overestimating platypuses.

你可能低估袋熊的大小，高估兽的大小。

Yeah, I felt the same way about the platypus.

是啊，我对兽也是这么个感觉。

And, of course, there are some incredible animals in Australia Like kangaroos and emus that live on the coast, and the cute marsupials like koalas and wombats, and unique animals like the platypus and camels.

当然，大洋洲也有一些不可思议的动物，比生活在海边的袋鼠和鸸鹋，还有可爱的有袋动物，比考拉和袋熊，还有一些独特的动物，比兽和骆驼。

These subtle creatures didn't belong to any of the three main mammal groups on the planet today-which are the placental mammals (like us), monotremes (like the platypus) and marsupials (like koalas and kangaroos).

这些小动物不属于今天地球上的三个主要哺乳动物群体——胎盘哺乳动物(像我们)、单孔目哺乳动物(像兽)和有袋哺乳动物(像考拉和袋鼠)。

But unlike snakes and other animals that use venom primarily for predation and defence, the platypus uses its venom for a different reason.

但与蛇和其他主要利用毒液捕食及防御的动物不同，兽使用毒液另有他因。

One review said, I wanted a duck, otter, and beaver bundle, but the duck-billed platypus not what I ordered.

一篇评论说，我想要一只子、水獭和海狸皮，但是兽不是我点的。

Those animals include koalas and platypus.

这些动物包括考拉和兽。

Some of which are very similar to those snake venoms, but others which are unique to platypuses.

其中一些（毒液成分）是与蛇类毒液非常相似的，但另一些（毒液成分）却是兽独有的。

Only male platypus have venom glands in a spur on their feet to deliver the venom.

只有雄兽在脚部骨刺上有毒腺，分泌毒液。

But the platypus has five, which more closely resemble a bird's.

但是兽有五个，更像鸟类。

Jellyfish, amphibians, owls, and even platypus' glow under ultraviolet light.

水母、两栖动物、猫头鹰， 甚至兽在紫外线下都会发光。

Never had he wished so much to be a duck-billed platypus.

他从未此渴望成为一只兽。

Wow, platypuses, how can I ever repay you?

哇，兽们，我该何报答你们呢？

I could say, " There are many animals that lay eggs. E.g. chickens or hens, ducks -- I think platypuses, although I'm not exactly sure about that one -- snakes, alligators, other birds, ostriches." So I used " e.g." to show these are examples.

我可以说，“有很多动物会下蛋。例：鸡、——我认为兽也会下蛋，虽然我不太确定——蛇、短吻鳄、其他鸟类、鸵鸟”。所以我用“例”来表示这些都是例子。

What Huang and his team found, looking at that collection of hearts, is that the proportion of polyploid cells in a heart goes up as you go from fish to lizards to amphibians to transitional species like platypuses, to mammals.

黄和他的团队发现， 通过观察心脏的集合，心脏中多倍体细胞的比例随着你从鱼类到蜥蜴到两栖动物到兽等过渡物种再到哺乳动物而上升。

Reptiles, amphibians, most birds, and monotremes like the platypus have a cloaca, a multipurpose swiss army knife of holes, linking the urinary, waste, and reproductive systems… I guess you could say: one ring to rule them all.

爬行动物、两栖动物、大多数鸟类和单孔目动物兽都有一个泄殖腔，这是一个多功能的“瑞士军刀”般的开口，连接着泌尿系统、排泄系统和生殖系统… … 我想你可以这么说：一枚戒指统治它们全部。