新闻旁边的边栏提供了事件的时间线。

The ___sidebar next to the news article gives a timeline of the event.

会议进行到一半时，经理和助理私下进行了简短的交流，讨论了一个细节问题。

During the meeting, the manager and assistant had a brief ___sidebar to discuss a specific detail.

你可以在这个网站的侧边栏找到最新的促销信息。

You can find the latest promotions in the ___sidebar of this website.