瞬息之间 shùnxīzhījiān in a flash Origin Definitions Defs Strokes Stroke Words Sentences Sents 瞬息 shùnxī in a flash a very short period of time; in the twinkling of an eye; ephemeral之间 之間 zhījiān locativenoun during A period of time within two points; also used after certain words to indicate a very short duration or an instant.