UML activity diagram is lack of strictly defined formal dynamic semantics,it is difficult to do formal analy-sis,verification and assertation on the systems discribed by it.
UML活动图缺乏精确的动态语义，不利于对其所描述的系统进行形式化的分析、验证和确认。
参考来源 - 期刊学术社区Discussion on communication and interaction between groups based on dynamic semantics is the development direction of dynamic cognitive logic.
在动态语义学的基础上讨论群体之间的交流和互动是动态认知逻辑的发展方向。
参考来源 - 动态认知逻辑发展初探·2,447,543篇论文数据，部分数据来源于NoteExpress
我们不能期望JVM优化所有Ruby的动态语义，这是另一个很长的话题了。
We cannot expect the jvm to optimize away all the dynamic semantics of ruby which is a different and lengthy discussion altogether.
一种清晰定义的动态语义框架：UML 2.0规范澄清了一些在老版本中的严重语义缺陷。
A clearly defined dynamic semantic framework: the UML 2.0 specification clarifies some of the critical semantic gaps in the original version.
BBC World Cup 2010 website用“动态语义发布”技术来提高每天的世界杯报道。
The BBC World Cup 2010 website used "dynamic semantic publishing" technology to enhance its daily World Cup reporting.
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