索引是用来定位数据页的顺序指针或键的集合。

Indexes are collections of sequentially ordered Pointers or keys used for locating data pages.

youdao

使用这些快捷键可以打开新标签页，查看访问历史，最大化窗口，还可以做更多的事情。

Open a new TAB, see your history, maximize your window, and much more with these shortcuts.

youdao

火狐中你可以设置退格键是返回前一页啊，还是页面向上滚动一页。

In Firefox, you can set your backspace to better use by getting it to either go back to the previous page or act as page up function.

youdao