勤労: labor

勤労: to labor, 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

to labor, to work

labor

to labor, to work

as hard as one can; to the best of one's ability

老化: age