SDTV
01
SDTV, 标准清晰度电视
a television system or display format that provides a moderate resolution and quality of video and audio compared to lower-quality formats like LDTV or higher-quality formats like HDTV
例子
Most channels used to broadcast in SDTV before HD became the standard.
在HD成为标准之前，大多数频道曾以SDTV广播。
