If the scan is all garbled, it is generally a problem with the operation method. It is suggested that the landlord can refer to the usage of this video file scanner:/v _ show/v _ show/id _ xntc4odm4ntaw.html.
If it is only partially garbled, it will not affect the topic search, and the search will not have any garbled results.
In addition, the machine has the function of voice recognition, so the landlord can operate directly with voice without a scanner.
I wish you progress in your studies and better grades. Welcome to consult next time.