The monkeys used in those experiments had previously been immunized with a vaccine made from killed infected cells.
这些实验中所用的猴子事先都已接种了由死亡的被感染细胞制成的疫苗。
猴子们在大叫吗？
The researchers then tested how the monkeys combined—or added the symbols to get the reward.
研究人员随后测试了猴子如何组合或添加这些符号来获得奖励。
Researchers will now be able to determine the parentage of individual monkeys from DNA without tranquilizing the monkeys.
研究人员现在可以通过DNA来确定单个猴子的血统，而不用对猴子进行麻醉。
To get to the lion's place we had to go through the monkeys' land first.
要到达狮子的地方，我们必须首先穿过猴子的地盘。
As the monkeys get better at completing their tasks, they learn new and more difficult ones.
当猴子完成任务的能力越来越强时，它们就会学习新的、更困难的任务。
After running hundreds of tests, the researchers noted that the monkeys would go for the higher values more than half the time, indicating that they were performing a calculation, not just memorizing the value of each combination.
在进行了数百次测试后，研究人员注意到，猴子有一半以上的时间会选择更高的数值，这表明它们在进行计算，而不仅仅是记住每个组合的数值。
In their cages the monkeys were provided with touch screens.
在笼子里的猴子们有触摸屏。
I remembered the stories he told me of how he fed the monkeys when he was a kid.
我记得他给我讲的他小时候喂猴子的故事。
How I wished I had some with me! William, the monkeys are taking long to come out today.
我多希望我身边有一些！威廉，今天猴子们花了很长时间才出来。
Normally, the monkeys were happy enough to exchange pieces of rock for slices of cucumber.
正常情况下，猴子们很乐意用石头换黄瓜片。
In this experiment, the monkeys had to identify certain patterns displayed on a computer screen.
在这个实验中，猴子必须识别电脑屏幕上显示的特定图案。
But the monkeys had no way to tell which reward or punishment was associated with which response.
但猴子们无法得知哪个奖励或惩罚对应于哪次回答。
But unlike in the dolphin experiment, the monkeys had to complete four trials before they got any feedback.
但与海豚实验不同的是，猴子们必须完成四项实验才能得到反馈。
If the monkeys touched the left side of the screen they would be rewarded with seven drops of water or juice.
如果猴子摸的是屏幕的左边，他们会得到七滴水或果汁的奖励。
As in a previous study, the monkeys were given a third choice that would allow them to pass on to a new trial.
在之前的研究中，猴子们得到了第三种选择，使他们可以继续进行新的试验。
Some scientists hypothesize that the monkeys rub their bodies with the millipedes because doing so helps protect them from mosquitoes.
一些科学家猜测，这些猴子用千足虫擦自己的身体，是因为这样做有助于保护它们免受蚊子叮咬。
When the tree falls，the monkeys scatter.
“树倒猴狲散。”
Thereupon, the monkeys protested angrily.
猴子们听了，都怒气冲冲地站立起来。
The monkeys looked down. They saw the hats.
猴子们向下一望，看到了很多帽子。
He shook his fist at them. The monkeys shook their fists too.
他想，“这些淘气的猴子偷了我的帽子”他冲它们挥挥拳头，猴子们也挥挥它们的拳头。
The monkeys appeared healthier too, says team member Ricki Colman.
猴子们看起来也更为健康，研究小组成员RlckiColman说到。
Gummy bears were abandoned because they stuck to the monkeys' teeth.
橡皮小熊糖没再喂给它们，因为容易粘牙。
After picking a square the monkeys were shown the prizes they had passed up.
猴子选出一个正方形后，科学家会给它看没得到的奖品。
After three days, the monkeys were tested without the benefit of the help icon.
三天后，猴子们将在没有帮助图标的情况下接受测试。
What we learned in the monkeys directly moves to humans, that is our on-going goal.
我们可以将对猴子试验的结果直接用于人类，这是我们的正在完成的目标。
In this scenario, the monkeys were again initially presented with two colored targets.
在这种场合下，猴子开始又被呈现两种有颜色的目标。
The monkeys were first given the option of choosing between one of two colored targets.
猴子们首先可以在两种颜色的目标之间选择。
The monkeys were first given the option of choosing between one of two colored targets.
猴子们首先可以在两种颜色的目标之间选择。
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