Each of these methods will return null if its opposite component or window is in a different context.

如果其对立组件或窗口处于一个不同的上下文，这些方法中每一个都会返回空。

youdao

It allows you to carve out an isolated context for a single user in a single browser window, with definitive beginning and end points.

它允许您借助确定的起始点和结束点在单个浏览器窗口中为单个用户创建单独的上下文。

youdao

It adds a variety of custom search widgets to an optional toolbar of each browser window, and also enhances the context pop-up.

它为每个浏览器窗口可选工具栏中增加了多种定制的搜索部件，并改进了上下文弹出菜单。

youdao

In the other context, you know in a Window and a Windows machine, you close it with the X on the top right hand corner, where do you close it in the Mac?

还有一个就是，在Windows操作系统下,当你要关闭某个东西时，需要点击,右上角的“X“,那在Mac操作系统下呢？

哈佛公开课 - 计算机科学课程节选

As before, Haier's seeing business potential in the device, and will be showing it off in the context of a window display at this year's show.

ENGADGET: Haier celebrates IFA with ultra high def 3D, transparent and eye-controlled TVs

All this is interesting in the context of a 2007 Fed effort to destigmatize discount window lending.

FORBES: Public, 2; Fed, 0