on board

Từ điển Oxford Advanced Learner 8th

on ˈboard idiom
1. on or in a ship, an aircraft or a train
Syn: ↑aboard
•Have the passengers gone on board yet?
2. giving your support to an idea or a project
•We must get more sponsors on board.
•You need to bring the whole staff on board.
•It's good to have you on board (= working with us) for this project.
Main entry: ↑board_idiom