These are often done by a single person so are grouped into a single human activity in the process model.
这些通常由一个人进行，因此归入流程模型中的单个人员活动。
There are many things that can be done by a single person or community that can begin to shape this vision.
通过某个人或社区开始塑造这个愿景，我们可以做很多事情。
The importance works were done by so many researchers and accumulated over such a long period of time that it was hard for a single person of a group to call a press conference.
工程的重要性进行了这么多的研究人员和在如此长的时间，这是一组单人召开新闻发布会难以积累。
The importance works were done by so many researchers and accumulated over such a long period of time that it was hard for a single person of a group to call a press conference.
工程的重要性进行了这么多的研究人员和在如此长的时间，这是一组单人召开新闻发布会难以积累。
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