“the need to understand the relationships of text objects (headings, subheadings, paragraphs, sections) in the index or text, or to verity that certain parts of the text have already been searched.
“the need to understand the relationships of text objects (headings, subheadings, paragraphs, sections) in the index or text, or to verity that certain parts of the text have already been searched.
了解索引或内文中文字物件(标目、次标目、段落、章节)彼此关系，或检验那些文字部分是已经检索过了的需求。