n. relatively small placental mammals having a single pair of constantly growing incisor teeth specialized for gnawing
a. 咬的, 啮齿类的
n. 啮齿动物
1. Rodents, like mice and rats, are often found in urban areas.
啮齿动物，如老鼠和大鼠，常常在城市地区出现。
2. Many people keep pet rodents, such as hamsters or guinea pigs.
许多人养宠物啮齿动物，比如仓鼠或豚鼠。
3. Some rodents can carry diseases that affect humans.
一些啮齿动物可以传播影响人类的疾病。