第三人称单数：switches off 现在分词：switching off 过去式：switched off
1.不收听(某一广播)
1.if you switch off something such as a light or a machine, or if it switches off, it stops working
2.to stop listening to someone, or to stop thinking about something
3.if people switch off doing something, each of them does it for a while, one after the other
switchoffswitchoffswitchoff