gear up for something

Từ điển Oxford Advanced Learner 8th

ˌgear ˈup (for/to sth) | ˌgear sb/sthˈup (for/to sth) derived
to prepare yourself/sb/sth to do sth
•Cycle organizations are gearing up for National Bike Week.
see also ↑geared
Main entry: ↑gear_derived