获取或设置此时间线播放的时间长度，而不是计数重复。

Gets or sets the length of time for which this timeline plays, not counting repetitions.

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上一版本的时间计数在播放SACD时会稍稍跑快，这个版本中改进。

The previous firmware version displays the time counter slightly too fast when playing SACD. This version fixes the issue.

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运动器在使用中除了具有可播放音乐、计数、热量消耗值及语音等功能外，更有提供运动者可依本身动作频率快慢控制音乐播放及语言提示。

Except playing back music, counting, displaying heat loss value and sending voice, the exerciser can provide the exerciser with music speed control and voice prompt.

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