Because activities may be executed twice, you need to handle them accordingly.
由于可能会执行两次活动,因此您需要相应地处理它们。
Within a phase, the set of workflows may be executed multiple times, in iterations.
在阶段内,一组工作流可能在迭代过程中执行多次。
Both are complementary in that regard and many BPMN models may be executed as BPEL processes.
二者在这方面是互补的,而且许多BPMN模型都能作为BPEL流程执行。
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