Monkeys are susceptible to infection but are not considered plausible reservoir hosts as virtually all infected animals die too rapidly to sustain survival of the virus.
猴易感染这两种病毒，但不认为猴是可能的宿主，因为实际上所有感染这两种病毒的动物都迅速死亡，很难维持病毒的生存。
All animals have it. It seems to vary enough, but not too much, to act as a reliable marker.
所有动物都有这个基因；这种基因有它的变体，但变体不多，因此可以作为可靠的标记。
Monkeys are susceptible to infection but are not considered viable reservoir hosts as virtually all infected animals die too rapidly to sustain survival of the virus.
猴子易受感染，但未被认为是可生存的有效储主，因为几乎所有受感染动物太快死亡以至于不能维持该病毒的生存。
But I will not drive them out in a single year, because the land would become desolate and the wild animals too numerous for you.
我不在一年之内将他们从你面前撵出去，恐怕地成为荒凉，野地的兽多起来害你。
Of course, it's a much debated question of whether it's ethical to study on animals too, but putting that question aside, clearly it can really help science move forward to do animal research.
当然，在动物身上进行研究是否道德同样是一个备受争议的问题，姑且先不谈这个问题，显然动物研究确实能够推动科学进步。
There were just too many. Not only were people bringing in their own animals, but strays were also dropped off.
动物太多了，不仅有人们带来的宠物，也有送来的流浪动物。
But I think they are cruel animals too.
但我觉得它们也是很残忍的动物。
But the ducks pecked the Ugly Duckling. All the animals in the farmyard bit him and pushed him, too.
但是小鸭们都去啄丑小鸭，农场里的所有动物也都去咬她、推她。
It is strange that people love certain animals, but enjoy killing others, in cruel ways, too.
奇怪的是人们喜爱有些动物，却乐于残杀另一些，并且以残酷的方式。
It has been found long ago that not only man but also animals too have memory power.
很久以前人们就发现不仅人而且动物也有记忆能力。
We sometimes think humans are uniquely vulnerable to anxiety, but stress seems to affect the immune defenses of lower animals too.
有时候我们认为唯有人类容易受到焦虑的伤害，但是压力似乎对免疫力底下的动物也有影响。
But it was not enough that he himself thought so, he had to be sure that the other animals thought so too.
但是光他自己这样想是不够的，他必须确定一下，其他动物也是这样想的。
But most plants and land animals cannot live on the ice. It is too cold.
由于冰太冷，大多数植物和陆地动物都不能在冰上生活。
Professors from Western University in California say animals, like humans, can eat too much not necessarily out of hunger, but as a result of "emotional eating".
来自加利福尼亚西方大学的教授说动物就像人类一样，不饿也能吃很多，但这是因为“情绪进食”。
It most often kills domestic animals like sheep and cattle but it can kill humans too.
炭疽毒素常常杀死家畜如羊、牛，但也能导致人的死亡。
Katie & I both like nature and animals, but Kerry doesn't care too much for them. We all like trying different kinds of food though.
Katie和我都喜欢自然风景和动物，可Kerry不怎么喜欢，但是我们都喜欢品尝各种美食！
This is why the new installment is not only about natural *habitats but also takes us into the cities too, to show how human behavior has impacted nature and how animals have adapted to survive it.
而这也是新一季并不仅仅局限于自然栖息地，还带领我们来到城市的原因，并向我们呈现了人类活动如何影响自然，以及动物如何适应并生存下来的情境。
This is why the new installment is not only about natural *habitats but also takes us into the cities too, to show how human behavior has impacted nature and how animals have adapted to survive it.
而这也是新一季并不仅仅局限于自然栖息地，还带领我们来到城市的原因，并向我们呈现了人类活动如何影响自然，以及动物如何适应并生存下来的情境。
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