Weird Fact: a mouse can fit through a hole the size of a ballpoint pen.
怪异的事实：能钻进圆珠笔洞大小的老鼠。
2
If you're always jotting things down, a fresh notepad and uncapped pen should be next to your mouse pad.
如果你经常记录一些东西，一个新的笔记本和一个未开封的笔应该放在你的鼠标旁边。
3
In drawing with those tools, the mouse automatically sets the coordinate points and the type of tool, such as a box, and selects the pen and stroke for you via a GUI environment.