set off
set offphrasal verb
UK/ˌset ˈɒf/US/ˌset ˈɑːf/
Dạng từ: sets off · setting off
START JOURNEY
B1to start a journey
- We set off early to avoid the traffic.
- What time did you set off?
CAUSE
B2to make something start, such as an alarm or a bomb
- The smoke set off the fire alarm.