名词 header:

1. a line of text serving to indicate what the passage below it is about

2. horizontal beam used as a finishing piece over a door or window

3. brick that is laid sideways at the top of a wall

4. a framing member crossing and supporting the ends of joists, studs, or rafters so as to transfer their weight to parallel joists, studs, or rafters

5. a machine that cuts the heads off grain and moves them into a wagon

6. (soccer) the act of hitting the ball with your head

7. a headlong jump (or fall)

headern.装桶盖的工人；割穗机；顶梁；集管n.[体]头球；头朝下一跳n.[计]页眉header card标题卡,首号卡header pipe总管header back收割台挡风板header shoe收割台仿形滑脚header tile丁砖header band标题带header flag标题标志header cell标题单元header line标题行header bond丁砖砌合法,全丁砖砌合法,丁砖砌合

1. Channels operate on messages and message headers.
   通道对消息和消息头进行操作。
2. Headers and footers are assigned to a page style.
   页眉和页脚具有相应的页面样式。
3. Some commonly created masters include headers, footers and navigation.
   创建主控文档经常用于页眉，页脚和导航。