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close captioning 强调
一般	скрытые субтитры (ad_notam)
英语 词库
close captioning
一般	A service or feature that renders the audio content of a television or video program as text on the screen. These captions are usually visible only if decoded or activated
close captioned
摄影	A system which displays the current dialog on screen for deaf or hard-of-hearing viewers. Contrast with subtitles, intertitles.