And we used the technology that allows us to synchronize his teaching materials beside the window where the video was playing.
另外,我们利用技术,将他的教学材料同步呈现在,播放录像的窗口边。
A point right on the screen mush like you might do when playing a video game.
屏幕上的一个点就像大家,在玩电子游戏时候见到的那样。
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