broken - DOWN, on-off - switch, plug - in, remote - control, start - up (a computer), air - industry, save - a document, expert - in the field of..., outer - space, turn - into sth, carry out/ do - an experiment, come up - with, make - a discovery, experiment - on/ with sth, proove - a theory, hang - up, set up - a phone, top - up a phone, be - down, be out - of order, catch - hold of sth,

Nauka i technika - wyrażenia

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