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1·Researchers observed one bird impale a rodent on a cactus.

研究人员观察到，一只鸟把一个啮齿动物钉到了一棵仙人掌上。《柯林斯英汉双解大词典》

2·When there is a full moon, this nocturnal rodent is careful to stay in its burrow.

在有满月出现的时候，这种夜间出没的啮齿类动物小心地呆在它的洞里。《柯林斯英汉双解大词典》

3·Mickey Mouse starts as an ugly, little rodent.

米老鼠开始是又丑又小的噬齿动物。

4·The only exception is an unusual African rodent, the naked mole rat.

唯一的例外是一种不寻常的非洲啮齿动物，裸鼢鼠。

5·The new study found that 70 percent of rodent and primate groups have species with an appendix.

这项新的研究发现，70%的啮齿动物和灵长类动物的物种具有阑尾。

6·By competing with rodents for seeds, black ants help control rodent populations that pose a public health risk.

通过与啮齿动物争夺种子，黑蚂蚁有助于控制啮齿动物的数量，这些啮齿动物会对公众健康构成威胁。

7·They're a type of rodent who, who burrow in the ground in the grasslands of the western United States and Mexico.

它们是一种啮齿类动物，在美国西部和墨西哥草原的地上挖洞。

8·The fearless rodent proved he was no scaredy-cat as he astonishingly squared up to his large opponent and refused to budge.

这只无所畏惧的啮齿动物证明了自己并不是胆小鬼，它向体型庞大的对手摆出了惊人的架势，并拒绝让步。

9·The only mammal added to the list this year was the Eastern Voalavo, a rodent that lives in the mountainous forests of Madagascar.

今年唯一被列入名单的哺乳动物是马达加斯加山鼠，一种生活在马达加斯加山区森林里的啮齿动物。

10·Studies of animals, for example, have shown that when a rat experiences stress during pregnancy, it can cause epigenetic changes in a fetus that lead to behavioral problems as the rodent grows up.

例如，对动物的研究表明，老鼠在怀孕期间经历压力会导致胎儿表观遗传发生变化，进而导致啮齿动物在成长过程中出现行为问题。