arc welding

to study / to learn

a weld; welding

to weld, to weld together

technology; technique; technical

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

an arc of electricity / part of a series, as in a story arc or character arc / part of a circle or orbit / an arc in general

アーク灯: an arc lamp, a lamp that creates light by means of an electrical discharge arc