代序 dàixù alternative preface Definitions Defs Origin Strokes Stroke Words Sentences Sents dàixù alternative preface 代 dài prepositionverb to substitute to take the place of; to act on behalf of another; to replace序 xù noun preface The preface or foreword to a book; also refers to introductory sections of a performance or event, such as a prologue.dàixù to take turns 代 dài prepositionverb to substitute to take the place of; to act on behalf of another; to replace序 xù noun order (bound form) Order or sequence; the arrangement of things in time or space.