There is not much time before Copenhagen, but there is enough to open up an alternative track.
距离哥本哈根会议召开的时间不多了，但足以提出一个新的解决方案。
Other alternative input devices include single switch devices, devices that track head movements, and alternative keyboards for persons with mobility impairments.
其它可选择的设备包括单一切换设备、跟踪头部移动的设备，和用于行动困难的人可选择的键盘。
If prayer and faith healing had a proven track record of success, it could be argued by the Wylands and other defendants that they provided a legitimate, proven alternative to medical care.
假如祈祷和信仰疗法确实有成效，Wyland夫妇和其他被告就可以声称，他们为医药护理找到一种合法的、可行的替代选择。
There had always been three tracks to choose from in choosing which track to walk in; now the choice was narrowed down to two. For a moment I missed terribly the middle alternative.
以前总有三条可供选择，现在减少到了两条，有一阵子，我万分怀念中间那条。
Prerecorded video-only: Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.
预先录制好的纯视频：为预先录制好的纯音频内容提供一个用于展示等价信息的的基于时间的媒体或者音轨的替代方案。
Prerecorded video-only: Either an alternative for time-based media or an audio track is provided that presents equivalent information for prerecorded video-only content.
预先录制好的纯音频：为预先录制好的纯音频内容提供一个用于展示等价信息的基于时间的媒体替代方案。
This track may need an alternative auditory track.
此跟踪可能需要一个可选的听觉跟踪。
This track may need an alternative auditory track.
此跟踪可能需要一个可选的听觉跟踪。
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