I must turn on the closed captioning.

我跟不上，我必须把字幕机打开了。

Note: The closed captioning check boxes are greyed out if you the slide does not contain an audio.

注： 如果你的幻灯片不包含声音，则隐藏式字幕复选框是灰的。

The wall display can also provide captions for display-over images and Swing components, allowing for a form of closed captioning (for example, to display any spoken speech output).

墙壁显示还可以提供所显示图像的字幕和Swing组件，以显示关闭字幕的窗体(例如，显示任何播放的语音输出)。

It is far more common for items designed for disabled people to be adapted for general use, like closed-captioning on televisions in gyms or GPS devices in cars that announce directions.

更为常见的是为残疾人设计并使其普遍使用的项目，像体育馆电视屏幕上的字幕或报告方向的汽车GPS导航仪。