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。

youdao

All the actors know the play backward.

所有演员对剧本都熟知到可以倒背如流。

youdao

All the actors know the play backward.

所有演员对剧本都熟知到可以倒背如流。

youdao