They tested the compound first in laboratory dishes, then in animals.
他们首次在实验室中实验这种化合物，然后开展动物实验。
They tested the compound first in laboratory dishes, then in animals.
因此，动物疫病实验室检验方法显得尤为重要。
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。
The nocturnal animals hide in underwater caves by day, then venture out at night, feeding on small fish, squid, and octopus.
这种夜行性动物白天时隐藏在水底洞穴里，晚上才出来冒险，它们以小鱼、乌贼和章鱼为食。
We used to have the main feeding time in the afternoon at around 3 pm, but we found that some of the animals got a bit hungry waiting until then and so we now have it at noon.
我们过去主要的喂食时间是下午3点左右，但我们发现等到那时有些动物会有点饿，所以我们现在的喂食时间是中午。
The paintings in this cave refute the old theory that Cro-Magnon people painted animals that they hunted and then ate.
这个洞穴里的绘画驳斥了古老的理论，即克鲁马努人画的动物是他们狩猎和食用的。
Every year, people put their pets in their cars, drive for kilometers, then leave these poor animals at the side of the road.
每年，人们把他们的宠物放在他们的车里，开几公里，然后把这些可怜的动物留在路边。
They start in our wastewater, then flow into rivers and out to the sea, where they are eaten by sea animals.
首先是我们的废水，接着便流入河海，被海里的动物吞食。
And then in my own view, this extends to animals, to creatures.
然后在我个人看来，这也可以延伸到动物，乃至所有生物上。
Mice in this case are the first line of experimentation — the scientists hope to then expand the research out into other animals that can produce milk in bulk, like goats and cows.
其实，老鼠只是这个实验的第一个阶段，这些科学家希望以后能将这项研究扩展到其他能大量产奶的动物上，比如山羊和奶牛。
If we can use her DNA to find that mutant gene then we can test it in laboratory animals to see if we can switch if off and slow down the ageing process at will.
如果我们能够在她的DNA当中发现变异的基因，我们可以在其他动物身上试验这些基因，看我们能否任意减缓老化的过程。
Humans then chose to mate individual animals or plants that carried the particular gene in order to make the desired characteristics more common or more pronounced.
之后人类选择具有独特基因的动物或植物个体进行配对，使它们那些为人所需的特性变得更为普遍和显著。
We know these facts from the several cases where children have been raised in the wild with animals, and then captured by humans.
看看那些被野生动物抚养长大后被人抓住的兽孩，我们不难理解这些道理。
Depending on what else is nearby, these new forests may then be colonised by animals and additional plants, and thus support many of the species found in the original forest.
视附近的情况而定，动物和新生植物可能随后占据这些新生林区，因而保护了很多原生林里的物种。
Mr. Coyote knew he could not let the animals know he was blind. He felt his way to a wild rose bush; he then put two rose petals in for his eyes.
狼先生意识到他不能让其他的动物发现自己变瞎了，于是他摸索着走进了一片野生玫瑰丛中，摘下两片玫瑰花瓣粘在眼睛的位置上。
The men had milked the cows in the early morning and then had gone out rabbiting, without bothering to feed the animals.
他的雇工在大清早挤了牛奶，然后就出去抓兔子了，因为怕麻烦，就没有喂那些动物。
From a psychological point then, animals have evolved to be nice to their kin, particularly their children, and particularly in birds and mammals.
从心理学角度看，动物进化趋向于对自己的亲人有益，特别是自己的孩子，以鸟类和哺乳类为代表。
The truth is that once American consumers start demanding cosmetics that are cruelty-free, then and only then will American manufacturers stop torturing animals in the name of beauty.
事实就是，一旦美国消费者开始要求人道化妆品，那时候，而且只有那时，美国制造商才会以美丽的名义停止对动物的折磨。
Then the researchers started keeping the animals in clean cages. Really clean cages, in which the bedding, food, and water are sterilized.
研究人员将它们放入洁净的笼中，这可是真正的一尘不染——它们的寝具、食物、饮水全都是经过消毒无菌的。
To show this was not just because the animals were not getting food, the researchers then tested the dogs alone and found that in this situation the envious canines cooperated longer before stopping.
狗这样表现可不只是因为他们得不到奖赏，研究者稍后单独测验了狗狗们的表现，发现此条件下那妒火中烧的狗在停下不做之前合作了更长的时间。
They should come and live in Siberia for a couple of months and then see if they are still so worried about the animals.
他们应该到西伯利亚来住两个月试试，看他们是不是还会为动物操心。
In life, if not honest character, and then, like dead meat, and the animals do not have what difference.
人生在世，若无诚实的品德，那么，就如尸走肉，与动物没有什么样区别。
Here are some words that describe animals. Write these words in the boxes below. Then write other words you know.
这儿有些描写动物的单词。在下面的表格中写出这些单词。然后写出你所知道的另一些单词。
They are caught directly from the excreta of these animals by people living in rural areas and then spread person to person.
生活在农村地区的人直接逮到这些沾染排泄物的动物，然后病毒得以迅速传播。
So I started by just sewing the pacifier onto a bunch of stuffed animals." Williams then designed a stuffed animal pacifier in a size that's easy for a child to hold.
于是，威廉开始按照孩子轻松抱着玩具的尺寸，来设计毛绒玩具奶嘴。
Give them seizures?, to figure out how to make it in quantity and with uniform quality, to test the drug in larger lab animals such as dogs, and then to test it in people.
会让老鼠突然发作？，要计算如何大量生产并保证相同品质，要在如狗一样较大的实验室动物身上测试该药物，然后进行人体试验。
The nocturnal animals hide in underwater caves by day, then venture out at night, feeding on small fish, squid , and octopus.
这种夜行性动物白天时隐藏在水底洞穴里，晚上才出来冒险，它们以小鱼、乌贼和章鱼为食。
Here, then, you see in what ways the food of the plant is different from that of animals.
由此你可以看到植物的食物与动物的食物在哪些方面有所区别。
Here, then, you see in what ways the food of the plant is different from that of animals.
由此你可以看到植物的食物与动物的食物在哪些方面有所区别。
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