书法老师提醒学生，研墨时可以用水注缓慢加水，避免墨汁过稀。
The calligraphy teacher reminded the students to use a water dropper to add water slowly while grinding ink, so that the ink would not become too thin.
The calligraphy teacher reminded the students to use a water dropper to add water slowly while grinding ink, so that the ink would not become too thin.