keep up

US /kiːp ʌp/
UK /kiːp ʌp/
"keep up" picture
1.

to continue to be at the same level or standard as someone or something else

:
It's hard to keep up with the latest technology.
She runs so fast, I can't keep up.
2.

to continue to do something

:
You're doing great, keep up the good work!
If you keep up practicing, you'll get better.