英语翻译Your final assignment is for you to write a composition

英语翻译
Your final assignment is for you to write a composition which has three parts.Part one,which may be one or more paragraphs,must be a narrative; part two,which may be one or more paragraphs,must be a definition; and part three is a conclusion.到底这个narrative 和 definition 有什么区别.文章主要内容为what it means to be a SZU student.也请帮忙翻译,是不是“成为深圳大学学生的意义”.