ballpoint

To mouse proof your house, check all small openings with a ballpoint pen - if it fits the hole, it will let mice in..要使你的房子里没有小老鼠，用圆珠笔来检查下所有的小洞，如果圆珠笔能放进去的话，那小老鼠就可能钻进去。

If you twist the shaft in one way it becomes a ballpoint pen..如果你以某种方式转动笔杆，它就变成了一支圆珠笔。

Laptop, flash disk, a ballpoint pen, a pencil, a notebook, a pair of glasses, cell phone, charger, moisture lotion, … Oh, that is too much..笔记本电脑，闪存，一致圆珠笔，一支钢笔，一本笔记本，一副眼镜，手机，保湿液，… 噢，太多了。

ballpoint pen,n. 原子笔，圆珠笔