基本解释
拼音：xī shǔ shí niú
注音：ㄒㄧㄕㄨˇㄕˊㄋㄧㄡˊ
解释：鼷鼠：鼠类中最小的一种，咬人及牛马时不易被发现，被咬者毫无感觉，所咬伤口即成疮。鼷鼠咬牛。比喻暗中害人。
出处：《左传·成公七年》：“七年春王正月，鼷鼠食郊牛角，改卜牛。鼷鼠又食其角，乃免牛。”
单字解释：
鼷
鼠
食
牛
英语解释
Mouse: the smallest kind of rodents. It is not easy to be found when biting people, cattle and horses. The bitten person has no feeling, and the bite wound becomes a sore. Mice bite cattle. It's a metaphor for secretly harming people.
