pull-down menu

剑桥词典

a list of instructions , especially on a computer screen , that is hidden until you open it
（电脑屏幕上）下拉式菜单，下拉选项屏
Click "Tools", then select "Options" from the pull-down menu . 点击“工具”，然后从下拉式菜单里选择“选项”。 返回 pull-down menu