repeating turning point

例句：

1. 1. The repeated pattern in the data is a warning sign.
   数据中反复出现的模式是一个警告信号。
2. 2. The teacher repeated the lesson to ensure everyone understood.
   老师重复讲解，确保每个人都理解了。
3. 3. The repeating of history lessons helps students remember important dates and events.
   重复历史课程有助于学生记住重要的日期和事件。