Short for 金属検出器 (kinzoku tanchi-ki, “metal detector”) or 金属検知器 (kinzoku kenshutsu-ki).

to use / to employ / to make use of, to apply / to spend

beach

search, look for

to check / examine

he / distal demonstrative, something far off removed from both speaker and listener: that / boyfriend

distal demonstrative, something far off removed from both speaker and listener: that, yon / particularly, male personal third person pronoun: he / by extension from he: boyfriend

he; boyfriend

a flip-flop

use one thing for many purposes / work someone hard