n.试映，预演；预告片；象征，预示；vt.预映；预先观看；概述；扼要介绍 变形： 复数：previews过去式：previewed过去分词：previewed现在分词：previewing第三人称单数：previews 双语释义：n.(名词)[C]预展，试映，预演 private showing of paintings,a movie,etc. before they are shown to the general public;lesson(s) preparation before a class