The brief prologue sets the scene for what is to follow.这段简短的序言叙述了故事的背景。The prologue to the novel is written in the form of a newspaper account.这本小说的序言是以报纸报道的形式写的。This was a prologue to today's bloodless revolution.这拉开了当今不流血革命的序幕。The play begins with a brief prologue.该剧以一简短的序幕开场。