All the actors know the play backward.

所有演员对剧本都熟知到可以倒背如流。

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As such, consider making the frames play backward or forward in time depending on which button was clicked.

因此，帧在时间上是反向播放还是正向播放，取决于按下了哪一个鼠标按键。

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Look left to skip backward or right to play.

向左看跳过落后或向右打。

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Look left to skip backward or right to play.

向左看跳过落后或向右打。

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