back-up
adj 1noun 1
Collocations
4ADJ.
electric, inside, non-striking
VERB + BACK-UP
coin
BACK-UP + NOUN
battery, generator, rail, site
PREP.
in
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ADJ.
electric, inside, non-striking
VERB + BACK-UP
coin
BACK-UP + NOUN
battery, generator, rail, site
PREP.
in