brain / head / chief, principal

development

to develop

extraordinary, unusual

emergency

very; extremely / exceedingly; tremendously

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

悲惨: misery / 飛散: flying, scattering, dispersal