选择其中一个变量，例如活动的输入，如图 10 所示。
Select one of the variables, such as the input to the activity, as shown in Figure 10.
这些您将不会对细粒度的详细信息感兴趣，例如活动之间交换的数据结构的定义。
These users are not interested in the fine-grained details, such as the defining the structure of the data exchanged between activities.
例如，如果你想在社交活动上结交新朋友，你就需要表现得友好。
For example, if you want to make new friends at a social event, you will want to appear friendly.
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