keep up

Từ điển Oxford Advanced Learner 8th

▪ I. ˌkeep ˈup derived
if particular weather keeps up, it continues without stopping
•The rain kept up all afternoon.
Main entry: ↑keep_derived
 
▪ II. ˌkeep ˈup (with sb/sth) derived
to move, make progress or increase at the same rate as sb/sth
• Slow down— I can't keep up!
• I can't keep up with all the changes.
•Wages are not keeping up with inflation.
Main entry: ↑keep_derived