switch on
- start the flow or operation of something by means of a valve, switch, or button
- 相關詞
- turn on an electrical device
Oxford American Dictionary
- aware of what is going on or what is up to date: your shortcomings will be apparent to a switched-on youngster
Oxford Dictionary
- turn an electrical device off (or on)
Oxford Dictionary
- 更多解釋
- start the flow or operation of something by means of a tap, switch, or button
Oxford Dictionary