momentary
adjective uk/ˈməʊ.mən.tər.i/ us/ˈmoʊ.mən.tər.i/
片刻的，瞬息的;短暂的
lasting for a very short time
a momentary hesitation 片刻的犹豫
Synonyms: brief (SHORT IN TIME)ephemeralevanescent fleetingfugitive (TEMPORARY) passing short-livedtransient transitory