any of various small mammals with large sharp front teeth , such as mice and rats
发音
例句
1. When there is a full moon, this nocturnal rodent is careful to stay in its burrow. 月圆之夜,这种夜间活动的啮齿类动物会小心地呆在地洞里不出来。 2. This small rodent can scoop out a long, narrow tunnel in a very short time. 这种小啮齿动物能在很短的时间里挖出一条又长又窄的地道来。