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  1. switch on

    • ph.
      start the flow or operation of something by means of a tap, switch, or button
    • 相關詞
    • ph.
      turn on an electrical device

    Oxford American Dictionary

    • adj.
      aware of what is going on or what is up to date: your shortcomings will be apparent to a switched-on youngster

    Oxford Dictionary

    • ph.
      turn an electrical device off (or on)

    Oxford Dictionary

    • 更多解釋
    • ph.
      start the flow or operation of something by means of a valve, switch, or button

    Oxford American Dictionary