尽管它们对彼此都很小气，但我感觉臭臭让鼠鼠感到高兴。
In spite of their ungenerous behavior toward each other, I felt that Stinky made Mouse happy.
有的活泼开朗、也有的沉默寡言，有的胆大包天、也有的胆小如鼠鼠……而我，就属于胆小的那一类。
Some lively open and bright, also some quiet, some bold, also some timid... and I, is rather timid that category.
在实验中，社交机器鼠跟随生物鼠四处走动，与它们玩同样的玩具，还会打开笼门让被困的老鼠逃走。
During the experiment, the social robot rat followed the living rats around, played with the same toys, and opened cage doors to let trapped rats escape.
几十年来，毛皮贸易一直控制着海狸鼠的数量，但在20世纪80年代末，海狸鼠毛制品市场崩溃，导致这种猫大小的动物的数量疯涨。
The fur trade kept nutria in check for decades, but when the market for nutria collapsed in the late 1980s, the cat-sized animals multiplied like crazy.
但要使进化真能发生效力，在鼠之鼠之间以及人与人之间，一定存在个体变异。
But for evolution to be able to act, there must be individual variation between mice, and between men.
不仅人们已经发现的他们杀害和弄残他们的幼仔，它们还会杀死鼠海豚，玩弄鼠海豚的尸体，并且毫无理由，似乎只为了玩耍。
Not only have they been known to kill and maim their own young, they also kill porpoises and play with their dead carcass for no apparent reason other than its fun.
他们发现植入健康鼠脑的干细胞位置不变而植入受伤鼠脑的干细胞向受伤部位移动。
They found that cells implanted into healthy brains stayed put, whereas those implanted into damaged brains moved towards the injured area.
而在雌鼠占绝对优势的分组中的雌鼠与雄鼠在一起时，这样的行为会减少。
The females did this less when they were with a male rat that had grown up in a female-biased litter.
作者给出了两种理论：或许雄鼠之所以对雌鼠不感兴趣是因为它们本身已经很像雌鼠了？
The authors offer a couple of theories. Maybe boy rats are less interested in girl rats because they are already familiar with girls?
作者给出了两种理论：或许雄鼠之所以对雌鼠不感兴趣是因为它们本身已经很像雌鼠了？
The authors offer a couple of theories.Maybe boy rats are less interested in girl rats because they are already familiar with girls?
当科学家给实验鼠服药，以暂停两个区域间神经信号的传递时，实验鼠便忘掉了长期记忆。
When scientists drugged the rats to halt neuron signals between the two regions, the rats forgot the long-term memory.
秘鲁的沿海省份卡里奥的官员在周一宣布天竺鼠可以摆上圣诞餐桌来代替传统的火鸡或是烤猪。 天竺鼠更加的便宜，而且脂肪含量较低。
Officials in the coastal Peruvian province of Callao on Monday hailed the Guinea pig as a low cost, low fat alternative to a traditional turkey or roast pork Christmas dinner.
当实验人员在实验鼠想要进食美食的时候，用电电实验鼠的脚，第一第二组的实验鼠就因为害怕而远离食物。
When the researchers applied an electric shock to the rats' feet in the presence of the food, the rats in the first two groups were frightened away from eating.
这些雄鼠可以补偿这一事实：它们对雌鼠吸引力不够。
The males may be compensating for the fact that they're less attractive to females.
然而，他警告在日本的捕猎可能危害白腰鼠海豚的亚种的安全，尽管白腰鼠海豚全种在地球上有一百多万只。
Still, she cautions that it's possible that the Dall's porpoise hunt in Japan may harm subpopulations of that animal, which numbers more than a million worldwide.
而且，在科研人员对实验鼠的心脏的电生理节奏进行干扰时，奔跑的实验鼠更容易发生心律不齐。
The researchers also could manually induce arrhythmias, or disruptions of the heart’s natural electrical rhythm, much more readily in the running rats than in the unexercised animals.
但在父亲肥胖的雌鼠身上，该基因的甲基化水平仅占对照组雌鼠的25%左右。
But in the daughters of obese fathers, the level of methylation of this gene was around 25% of the level seen in the control daughters.
老年鼠用药两个月后，在学习如何在水迷宫中寻路时比起其他同龄鼠出色得多。
When they gave it to old rats for two months, the elderly rodents did far better than other old rats in learning their way around a water maze.
删除单个基因使雌鼠像男鼠。
科学家们从死鼠的器官中提取细胞核，移入到另一只活鼠的卵细胞中，最终克隆出了小鼠。
The scientists extracted a cell nucleus from an organ of a dead mouse and planted it into the egg of another mouse which was alive, leading to the birth of the cloned mouse.
在气味标记上发现同样的结果，和正常雄鼠一样，转基因鼠会在笼子的任何角落里撒尿(不同于雌鼠，雌鼠有固定的厕所)。
The same was found for scent-marking. Like normal males, the mutant mice urinated in various spots around their cage (unlike females, who create a single latrine).
每个组由9只年轻雄鼠以及约30只老龄雄鼠组成。
Each group contained nine young male mice and about 30 old male mice.
我更偏向的是“在雌鼠堆里长大的雄鼠之所以不讨雌鼠喜欢，是因为它们分泌物的气味不足或者不同。”
My favorite theory is that “males reared in a female-based litter may be less attractive to females because they secrete less or different odor cues.”
涉及到吸入一些化学药品转变成的幻想剂所带来的放松，Touhara说：“雌鼠不得不触摸雄鼠，因为这个幻想剂不是像香水那种易挥发的混合物。”
"She has to touch it, because this is not a volatile compound like a fragrance," Touhara said, referring to the ease with which some chemicals turn into vapor.
涉及到吸入一些化学药品转变成的幻想剂所带来的放松，Touhara说：“雌鼠不得不触摸雄鼠，因为这个幻想剂不是像香水那种易挥发的混合物。”
"She has to touch it, because this is not a volatile compound like a fragrance," Touhara said, referring to the ease with which some chemicals turn into vapor.
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