ink spots

例句：

1. 1.The old book had many ink spots on the pages.
   这本书的页面上有很多墨渍。
2. 2.The pen left ink spots on the paper.
   这支笔在纸上留下了墨迹。
3. 3.The printer's ink spots were hard to remove.
   打印机留下的墨迹很难去除。