Note how these animals sometimes walk with their tails up in the air.
注意观察这些动物有时如何翘起尾巴走路。
Born and raised in a zoo, these animals would not be able to survive in the wild.
在动物园出生和长大的这些动物无法在野外生存。
We descendants of these animals were left with vestiges of their history, including the hiccup.
我们这些动物的后代同样也遗留下这些痕迹，包括打嗝。
Like males of most other vertebrate species, these animals take more than one mate if they can.
像许多其他雄性脊椎动物一样，如有可能，它们会拥有不止一个配偶。
"Zootopia" is the first time that they have even seen a sloth, but people now are keen to know more about these animals.
《疯狂动物城》是他们第一次看到树懒这种生物，但是人们现在很想知道更多关于这些动物的信息了。
They did studies with monkeys and dolphins that provide evidence that these animals have the ability to feel uncertainty.
他们对猴子和海豚进行了研究，提供证据证明这些动物具有感受不确定性的能力。
To prepare for this before winter, these animals eat extra food to become fat which gives them the energy they need while they sleep.
为了在入冬前做好准备，这些动物会吃更多的食物来增肥，从而获取睡眠时所需的热量。
Remember that the ranges of many animal species were different back then, so all these animals actually lived in the region at that time.
记住，当时许多动物物种的活动范围是不同的，所以所有这些动物实际上都生活在那个地区。
One thing he found was that humans didn't necessarily have to kill these animals in great numbers in order to nudge them toward extinction.
据他发现，人类不必大量捕杀这些动物，就可以使它们走向灭绝。
The artists were highly skilled at using, or even enhancing, the natural shape of the cave walls to give depth and perspectives to their drawings, the sense of motion and vitality in these animals.
艺术家们高度熟练地使用，甚至增强了洞穴墙壁的自然形状，使他们的绘画具有深度和透视感，以及这些动物的动感和活力。
Let's see how these animals find ways to protect their children.
让我们看看这些动物是如何想办法保护它们的孩子的。
If people then eat these animals, it means that we're eating the plastic as well.
如果人们吃了这些动物，就意味着也把这些塑料吃了进去。
People who hunt, kill, sell or eat these animals have the risk of becoming infected.
猎取、杀害、出售或食用这些动物的人有被感染的危险。
They were well trained by their masters who had great experience with caring for these animals.
它们被主人训练得很好，主人在照顾这些动物方面很有经验。
We found the bones of these animals.
我们发掘了这些动物的骨头。
All of these animals have drawbacks.
然而所有这些动物都存在一些缺陷。
As the true friends of humans, these animals are also good at making real fun.
作为人类的真正朋友，这些动物也善于让人们发笑。
Better yet, Miller points to the lessons that humans might learn from these animals.
更值得一提的是，米勒还指出了我们人类能够向这些动物学习的一些经验。
But improved learning ability does not get selected amongst these animals in the wild.
但是在野生动物中并不能通过自然选择获得改进的学习能力。
People and some animals also eat some other animals, and these animals eat plants.
人类与一些动物会以另一些动物为食，而这些动物又以植物为食。
Wells hopes future conservation of these animals will fully involve aboriginal cultures.
威尔斯希望这些动物的保育将来会涵括所有土著文化。
Acquiring specimens of these animals from around the world proved to be an unusual task.
要在全球范围内获得这些动物样品是一件非常不寻常的事。
If we hunt these animals, they'll be extinct before we know all the information about them.
如果我们继续捕猎它们，它们会在我们了解它们之前就灭绝了。
Living by a busy road, these animals aren't willing to take any chances when it comes to getting across safely.
住在车流如水的公路边，这些小动物们可不愿意冒险穿行。
We clearly have data showing that these animals recognize themselves in the mirror, but fail the mark test.
我们显然有数据表明那些动物可以在镜子中认出自己，却通不过标记测试。
The scientist explained that these animals were connected by blood vessels, they had a mutual blood circulation.
德米科霍夫解释说这些动物通过血管相连，共用一套血液循环系统。
Medical research teams such as Lee's are creating these animals in hopes of improving studies to benefit humans.
像Lee这样的医疗研究小组正在创造这些动物以提高研究水平以造福人类。
This is of special concern because of the important role these animals play in the subsistence diets of Alaska Natives.
这些动物在阿拉斯加土著人赖以生存的饮食结构中扮演重要角色，因此受到特别关注。
This is of special concern because of the important role these animals play in the subsistence diets of Alaska Natives.
这些动物在阿拉斯加土著人赖以生存的饮食结构中扮演重要角色，因此受到特别关注。
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