有时候，我们甚至需要花费一些时间来引入一个问题或是一个请求。
Sometimes, we might even need to spend some time leading in to a question or request.
企业经常面临的一个网络技术问题就是缺乏对引入的控制权。
The problem that enterprises often face with Web technologies is the lack of control they introduce.
BPMN 2必须解决这个问题，引入一个涵盖模型内容和图形布局的交换格式。
BPMN 2 must address this problem by introducing an exchange format covering model content as well as graphical layout of the diagrams.
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