1·The dog has fleas.
这条狗有跳蚤。
—— 《牛津词典》
2·You have rats, snakes, mice and fleas.
你有大老鼠、蛇、鼠和跳蚤。
3·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。
4·It is transmitted between animals and humans by the bite of infected fleas, direct contact, inhalation and rarely, ingestion of infective materials.
它通过受感染跳蚤的咬伤、直接接触、吸入和极少摄入传染物在动物与人之间传播。
5·It contained two small paillasses full of fleas.
它包含两个满是跳蚤的小草铺。