So this is the timeline, and if you've ever edited video, you're familiar with this, but instead of clips in the timeline, what you're looking at is web events pulled into the video.
这个是时间轴，如果你编辑过视频， 你对这个一定很熟悉。但在这里时间轴上的不是视频片段 而是网络事件，你可以把它们拉到主视频里