啮齿类

例句：

1. 1. Rats are known to carry diseases that can be transmitted to humans.
   老鼠被认为携带能传染给人类的疾病。
2. 2. Rodents are often found in urban areas due to their ability to adapt to human environments.
   由于它们适应人类环境的能力，啮齿动物常出现在城市地区。
3. 3. The study of zoology is important for understanding the behavior and ecology of these small mammals.
   研究哺乳动物学对于理解这些小型哺乳动物的行为和生态学非常重要。