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。
When there is a full moon, this nocturnal rodent is careful to stay in its burrow.
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。
They're a type of rodent who, who burrow in the ground in the grasslands of the western United States and Mexico.
以黑死病为例。这种疾病最常通过跳蚤叮咬传染给人类，跳蚤生存在啮齿类动物上。
Take bubonic plague for example. The disease is most commonly transmitted to humans through flea bites, and the fleas live on rodents.
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