Ajax并不是某些页面上出现的一些很酷的动画，也不是弹出窗口下一个很酷的阴影效果。

Ajax is not a really cool animation on some page, or a pop-up window with a really cool shadow underneath it.

youdao

WidgetFX是一个全功能的桌面widget组装系统，支持半透明效果、阴影窗口、重置大小、配置和一键安 装。

WidgetFX is a fully functional docking system for desktop widgets with support for translucency, shaped windows, resizing, configuration, and one-click installation.

youdao

这些阴影通过增加菜单或者窗口的维度来使它们变得醒目，同时也能来把这块区域变暗以阻止下方内容的干扰。

They help the menu or window stand out from the background by reinforcing its dimensions. They also block out the noise of the content beneath the window by darkening the area around it with a shadow.

youdao