Difficult expressions are explained in the glosses at the bottom of the page.难以理解的词组在页脚都有注释。She left a large space empty at the bottom of the page.她在页脚留下了大片空白。Page Mode shows headers, footers, footnotes and page numbers.页模式显示页眉、页脚、脚注和页码。The numbers shown in the text refer to footnotes at the bottom of the page.正文中出现的数字指引查阅页脚处的脚注。