set off

Từ điển tiếng Anh - Cambridge Advanced Learners Dictionary

set off/out phrasal verb [ setting off/out sets off/out ]
<I > to start a journey
• What time will we have to set off for the station tomorrow?
• Jenny set off down the road on her new bike.
• They've just set off on a round-the-world cruise.
Thesaurus⁺: ↑Departing
 
• When we heard he was ill, we set off straight away to see him.
• They set off before dawn.
• They set off on their desert crossing two days ago.
Main entry: set_{phrasal verb}