序言: introduction; preface; foreword; exordium 短语和例子作者的初版序言 the author's preface to the first edition
前边: 1.(前面) in front; ahead 短语和例子房子前边的树 the trees in front of the house; 个子矮的孩子坐在前边。 the shorter children are to sit at the front.2.(次序靠前的部分) above; preceding 短语和例子前边所提到的事 the things mentioned