A pop-up window is a rectangle on the screen that appears, overlapping and obscuring the main part of the screen, until it has completed its work, whereupon it disappears, leaving the original screen behind, untouched.

• 弹出窗口是出现在屏幕上的一个矩形，它会层叠和模糊屏幕上的主要部分。 直到完成工作并消失，不会改变原有屏幕的模样。