social media: media used to interact with other people.
| Facebook is the biggest social media in the world.
time-consuming and inefficient: something that takes too much of your time and isn’t rational to do.
| I find watching football time-consuming and inefficient.
to access websites/email: to visit websites/email.
| John accessed his email today to see if he had received any letters.
to back up files: to make a copy of files in case of a computer problem.
| I had to back up files on my computer, because I was going to reinstall my operating system.
to be stuck behind a computer: to use computer for a long period of time.
| A lot of teenagers are stuck behind their computers all day.