Meaning of “switch sth off/on” in the English Dictionary

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"switch sth off/on" in Business English

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switch sth off/on

phrasal verb with switch uk /swɪtʃ/ us verb

to make a machine or piece of equipment stop or start working by pressing a switch:

Mobiles must remain switched off throughout the flight.

(Definition of “switch sth off/on” from the Cambridge Business English Dictionary © Cambridge University Press)