in a flash片語KK [ɪn ə flæʃ] /ɪn ə flæʃ/發音片語1一瞬間、轉眼間、一剎那The whole pizza disappeared in a flash.整個披薩一瞬間就被吃光了。2立刻、馬上口語Wait here and I'll be back in a flash.在這裡等一下,我馬上就回來。