Work will now begin to test the hypothesis in rats.

在老鼠身上验证这一假设的工作现在要开始了。

《柯林斯英汉双解大词典》

It ends up in the cats' feces and then it ends up back in rats.

它从猫的排泄物中排出，又到老鼠体内。

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It is not likely that, for any species of monkey, crowding increases aggression as significantly as was seen in rats.

对于任何一种猴子来说，拥挤不可能使其像老鼠一样显著地增强攻击性。

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Most of these are shared among humans as well as mice, rats and other mammals used for comparison in the study.

VOA: special.2009.05.05

And then it ends up in the cats' feces and then it ends up back in rats.

它从猫的排泄物中排出,又到老鼠体内。

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What they did is they scanned the brains of rats while they were in a maze and after they went through the maze.

他们在老鼠处在迷宫中及脱离迷宫后,分别对它们进行了脑扫描。

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In rats with inherited eye defects "it works perfectly, " says Roger Ashby, the firm's chief executive.

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Bridging the gap between tests in rats and trials in people is slightly trickier.

ECONOMIST: Something new in mind

In the calorie-restricted rats, levels of ARC were twice those found in rats with unrestricted diets.

BBC: Elderly