ephemeral, transitory

to change; to become different; to turn into; to become (something else)

expression (facial, bodily, etc.)

roughly 0.11 seconds, defined as 1/65ᵗʰ of a 弾指 (danshi), where a danshi is 1/12,000ᵗʰ of a day or 7.2 seconds / 0.002 seconds, defined as 1/60ᵗʰ of a 念 (nen), where a nen is 1/60ᵗʰ of a 弾指 (danshi)

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 target, a mark, a bullseye / an objective, an object (of doing something)

as far as ... is concerned; in terms of ...

(sumo, martial arts) a quick shift of position / flexibility in adapting one's words and deeds to changing circumstances