现在已经定义了属性，接下来必须使用相对于您的环境的必要环境特定变量对其进行配置。
Now that the properties have been defined, you must configure them with the necessary environment-specific variables relevant to your environment.
实际上，更重要的是定义必要的数据字段，而不是决定这些字段作为元素还是属性。
In practice, it is more important to define the data fields that are needed rather than to decide on whether those fields should be elements or attributes.
活动还可以拥有可选和必要输入和属性，这由活动创建者定义。
An activity can also have optional and required inputs and attributes, as defined by the activity's creator.
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