long inks and short inks

例句：

1. 1.The long ink is used for writing on paper, while the short ink is used for drawing.
   长墨水用于在纸上写字，短墨水用于绘图。
2. 2. The long ink is more expensive than the short ink.
   长墨水比短墨水更贵。
3. 3.The long ink has a richer color than the short ink.
   长墨水的颜色比短墨水更丰富。