1N-COUNT 老鼠;耗子 A mouse is a small furry animal with a long tail. 老鼠;耗子
...a mouse running in a wheel in its cage.
在笼中转轮上奔跑的老鼠
...the problem of rats and mice.
鼠患
2N-COUNT 鼠标 A mouse is a device that is connected to a computer. By moving it over a flat surface and pressing its buttons, you can move the cursor around the screen and do things without using the keyboard. 鼠标