这两个并行分支在join处再次联接，从而结束并行执行。
The parallel branches are joined again in a join, which ends the parallel execution.
利用一个join节点重新联接并行分支，然后放置一个结束或停止节点，而不是分别结束每个并行分支。
Rejoin parallel branches with a join node and then place a single end or stop node, instead of ending parallel branches individually.
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