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To work, or to start working (of a piece of machinery)

operate

verb

if equipment operates, it works and does what it is intended to do

come on

to start working by being switched on

function

verb

to work or operate in a particular way

work

verb

to operate in a satisfactory way

run

verb

if a machine or engine runs, or if you run it, it is working

go on

if something such as a light or an electricity supply goes on, it starts working or becomes available

play

verb

to make something such as a radio, CD etc start to produce sounds, or to be made to do this

cut in

if a piece of equipment cuts in, it starts operating automatically when it is needed

into operation

if something comes or goes into operation, it starts to work or become effective

cope

verb

used about systems and machines

emoji

a small digital image … which is used in electronic communication to express emotion or other simple concepts

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Open Dictionary

major on (doing) sth

to have or do a lot of something; to focus on a particular thing

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