位置指示器在所述播放时间棒中移动，并以可视方式告知用户其当前位置处于节目内容中所处。
A position indicator moves within the trick play bar and tells the user visually where his current position is within the program material.
位置指示器在所述播放时间棒中移动，并以可视方式告知用户其当前位置处于节目内容中所处。
A position indicator moves within the trick play bar and tells the user visually where his current position is within the program material.
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