in a flash片语KK [ɪn ə flæʃ] /ɪn ə flæʃ/发音片语1一瞬间、转眼间、一刹那The whole pizza disappeared in a flash.整个披萨一瞬间就被吃光了。2立刻、马上口语Wait here and I'll be back in a flash.在这里等一下,我马上就回来。用这个字练口说→