forefront, leading edge, cutting-edge

technology

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

a job; an occupation; work / job, work (task) / (physics) work, change of energy

to work

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

nanotechnology

use one thing for many purposes / work someone hard