switch off phrasal verbphr v a) SWITCH ON OR OFFto turn off a machine, light, radio etc using a switch 〔用开关〕关掉，关上switch something ↔ off The burglar alarm was switched off. 防盗警报器被关上了。
Don’t forget to switch off before you go. 离开之前别忘记关掉开关。
b) informalATTENTION# to stop listening to someone 不再听；不加理睬[注意] He just switches off and ignores me. 他就是不听，不理我。
c) to relax for a short time 〔短暂地〕放松 Switch off by listening to music. 听听音乐放松一下。
switch off• In the end I got sick of the conversation and switched off.• It's OK - I switched the TV off before I went out.• It's difficult for teachers to switch off when they go home at night.• Always switch off your computer when you've finished.
→ switch off at switch1(1)