Take bubonic plague for example. The disease is most commonly transmitted to humans through flea bites, and the fleas live on rodents.

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。

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One night, a flea bites Dog.

一天晚上，狗被跳蚤咬醒了。

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One night, a flea bites Dog. "Woof! Woof!" Dog wakes up.

某晚，一只跳蚤把小狗咬醒了，小狗狗“汪汪！”

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Each year, roughly 10 to 20 people in the United States develop plague from flea or rodent bites, mostly from infected prairie dogs in rural southwestern areas, the NIH says.

CNN: London rail excavation unearths suspected 'plague pit'