Can I use “back up” and “back over” in those ways?
Does get “back over the line” mean “get back in line”?
Could “back over here” mean “come over here”?
Can “backup” mean “standup”?
Suppose a person just sat down in a classroom. When a Teacher tells the student "Get back up" it means "Stand back up", true? Or maybe they use up only when you are not done standing?
I saw a person in a movie one time saying:
I bring backups in case we need any.
I'll put some backups in case you need them.
Is backup used in that sentence the same way you say “backup your files” or is it informal?
Can I say: I'm always running out of water when I travel, get a backup bottle so we don't run out.
Are the sentences above, correct?