A semitransparent notification bar (see screenshot below), slides down from the top of the screen when you update your status via the Web.
当用户通过网页更新Twitter状态时，会从网页上方滑出一个半透明的通知栏。
2
While you can take advantage of transparency in countless ways, one area that it has helped particularly is with complex backgrounds overlaid with semi-transparent colors.
你可以在很多方面利用半透明的优点，其中之一就是使用半透明的颜色叠加到复杂背景时起到特别作用。
3
It also creates a ghostly, semi-transparent figure of the photographer who was captured standing on the beach in only one of the exposures.