Decision和merge始终映射到多个输入和输出条件，每个分支对应一个条件，而fork和join则分别对应于一个输出和输入条件。
Decision and merge are always mapped to several input and output criteria-one for each branch, while fork and join correspond to a single output and input criterion, respectively.
Decision和merge始终映射到多个输入和输出条件，每个分支对应一个条件，而fork和join则分别对应于一个输出和输入条件。
Decision and merge are always mapped to several input and output criteria-one for each branch, while fork and join correspond to a single output and input criterion, respectively.
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