学习记录机

例句：

1. 1. The student's learning record machine records all his study activities.
   学生的学习记录器记录了他的所有学习活动。
2. 2. The teacher uses a learning record machine to track students' progress.
   老师使用学习记录器来跟踪学生的进步。
3. 3. The learning record machine helps the students to review their mistakes and improve their skills.
   学习记录器帮助学生们回顾错误并提高技能。