Otherwise check if you have some pages in the databook that are filled with questions and answers but have not yet been memorized (i.e., fields of repetitions scores and repetitions dates are empty).

假如还有时间的话，检查一下数据笔记里是否有还没有记忆过的内容页（重复学习得分栏和重复学习日期栏都是空的）。