It has five pens on button, the first button is used for cutting pen.

它的笔杆上有五个按扭，第一个按扭是用来削笔的。

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This type of ball pen is used as a knife for cutting paper by teenagers.

这款圆珠笔被青少年当作小刀用来裁纸。

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This type of ball pen is used as a knife for cutting paper by teenagers.

这款圆珠笔被青少年当作小刀用来裁纸。

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