n.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
You have to jump higher to hit a header. 要顶到头球你还要跳得更高才行。
Each group header is paired with a group footer. 每个组页眉与一个组页脚配对。
