这意味着数据库可能有事件时间和事件记录时间。
This means that your database might have the event time and the event recorded time.
提雪注意到：反应持续时间和事件同步，背景同样重要。
Tsien noted that this response lasted as long as the event and that context was also important.
这个系统可以储存上亿条与人物，地点，时间和事件相关的信息。
The system can store hundreds of millions of facts about people, places, events and businesses.
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