然而，她们发现这个问题难以回答，因为实验老鼠不断地死掉。
However, they found this difficult to answer because their mice kept dropping dead.
在一项实验中，老鼠们又饥又渴。
在老鼠身上的实验表明，该药物对减轻体重有神奇功效。
Tests on mice have shown that the drug is effective in reducing body weight.
这只哈佛大学的团队在患有皮肤癌的老鼠身上对这项新技术进行了实验。
The Harvard team has tested its system on mice with skin cancer.
事实上，像这样的行为把人和实验室用的老鼠放到了同一水准上。
In fact, behavior like this puts people on the same level as laboratory mice.
有一天，我从实验室带了一只老鼠回家。
在其中一项典型实验中，一只白老鼠被放入有一束光照射的笼子中。
In a typical experiment, a rat was placed in a cage with a light.
我生物实验。今天是解剖老鼠。
这项研究并不是在人类身上实验的，而是在24只成熟老鼠身上。
我生物实验。今天是解剖老鼠。
I am going to have biology experiment. We will anatomize mouse today.
实验室助手给老鼠注射了那种新药。
第三组由有转轮的来自正规实验室的老鼠组成。
The third group consisted of regular laboratory mice that had a running wheel.
此时，科学家通过一项实验性的手术成功地使一只名为阿尔吉农的老鼠智力大幅提升。
Meanwhile, through an experimental operation, scientists greatly increase the intelligence of a mouse named Algernon.
在他们的实验中，Johnson和他的团队研究了老鼠大脑的“愉悦中枢”。
In their experiment, Johnson and his team studied the "pleasure center" of rats' brains.
实验室里吃了这种药的老鼠体重减轻了三分之一。
Laboratory mice given the drug lost up to a third of their total body weight.
实验室里吃了这种药的老鼠体重减轻了三分之一。
Laboratory mice given the drug lost up to a third of their total body weight.
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