如果我们发现一个团队或者团队成员不能在时间期限内实现一个适当产品的里程碑，这有时意味着存在需要帮助的问题。
If we found that a team or team member was unable to meet the deadline with a suitable product, it sometimes meant there was a problem that required assistance.
产品也关注时间表，也关注满足里程碑要求，但不关注结束的时间，因为产品开发更关注下个版本中的优化工作。
Products are also concerned about making timelines, and about meeting their milestones but not about ending, because product development is more about enhancing the next version.
图 1 展示了这个时间轴和各种里程碑，必须完成这些里程碑才能支持产品公告。
Figure 1 shows the timeline and various milestones that must be completed to enable the product announcement.
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