This type of memory remained for a week, a month, a year or several years, the memory needs to be reviewed periodically. An example of this is Such as memorizing textbooks
This type of memory remain as long as a week, a month or a year several years. As the memory that needs to be reviewed periodically. Examples of such obvious memorize textbook
This type of memory is fixed for a week for a month for a year or several years ago as a reminder of the need to have a periodic review the sample clearly recites the text book such as