It is perfectly natural that these selectors be on the toolbar. They offer the same functionality as those on the drop-down menu, but they also show the current style, font, and font size as a property of the current selection.

• 这些选择控件落户工具栏是极其自然的，它们和下拉菜单提供相同的功能。 而且还显示了当前选择的属性，即当前样式、字体和字号。