在一些文化中，我们用握手或其他手势来打招呼，以表明我们没有携带武器——我们是为和平而来。

In some cultures we greet people by shaking hands or with another gesture to show that we are not carrying weapons—that we come in peace.

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在典型的用例中，活动流是由特定参与者与系统间以执行特定目标为目的而开展的交互驱动的(例如，“管理水健康状况样本”)。

In a typical use case, the flow of activity is driven by the interaction of a particular actor with the system toward the execution of a specific goal (for example, "managing a water-health sample").

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查询中后面的几行表明，用引号括起来、并且以变量“ t ”为前缀的列是基于XML元素值的列。

Columns surrounded by quotation marks and prefixed with the "t" variable are based on XML element values, as the subsequent lines of the query indicate.

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