求翻译：如果我是一名发明家。我会发明一种笔，大概大家也都用过水性笔，只要水性笔的笔芯用完后，都要换笔芯，如果要绘画的话，还要换成水彩笔来涂色，而你如果用了我发明的这种笔是什么意思？

If I were an inventor. I invented a pen, probably we have used water-based pen, as long as the water-based pen cartridge is exhausted, the cartridge must be changed, if you want to paint it, but also into watercolor brush to paint, but if you I invented this with a pen

If I were an inventor. I have to invent a lump sum, and probably all of them have used water-based pens, as long as the amount of water refill after use, all we need to make changes, if you want to refill it, they have to be replaced painting artist brushes for painting, and if you should use this k

If I am an inventor.I can invent one kind of pen, probably everybody also has used the river character pen, after so long as the river character pen pencil lead uses up, all must trade the pencil lead, if wants the drawing, but also must change into the water painter's brush to spread the color, but

If I am an inventor. I'll invent a pen, you are probably are using water-based pen, as long as water-based pen pen conductor after use, to swap core, if you want to paint, but also into watercolor paint pen to, and if you took my invention of the pen

If I were an inventor. I invented a pen, probably we have used water-based pen, as long as the water-based pen cartridge is exhausted, the cartridge must be changed, if you want to paint it, but also into watercolor brush to paint, but if you I invented this with a pen