HDTV STB高清晰度电视机顶盒;数字电视机顶盒;高画质数位电视机上盒;hdtv机顶盒
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N-UNCOUNT（不可数名词） HDTV is a television system that provides a clearer image than conventional television systems. HDTV is an abbreviation for "high-definition television." 高清电视 [oft N n]
She said the quality of digital TV is noticeably better, especially HDTV.
她说数字电视的质量明显提高，尤其是高清电视。