scroll arrow

例句：

1. 1. The user can scroll through the list of contacts to find the one they need.
   用户可以滚动浏览联系人列表，找到他们需要的那个。
2. 2. The website has a scrolling arrow that shows the current page being viewed.
   该网站有一个滚动箭头，显示当前页面正在查看。
3. 3.The designer created a scrolling arrow that moves across the screen when clicked.
   设计师创建了一个滚动箭头，当点击时会移动到屏幕上。