on the run

Từ điển Oxford Advanced Learner 8th

on the ˈrun idiom
1. trying to avoid being captured
•He's on the run from the police.
2. (informal)continuously active and moving around
•I've been on the run all day and I'm exhausted.
•Here are some quick recipes for when you're eating on the run (= in a hurry).
Main entry: ↑run_idiom