The role of the join action is to synchronize multiple threads of parallel execution started by fork actions.

join动作的功能是要同步fork动作启动的多个并行执行的线程。

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The minimal CloudCrowd action is a simple Ruby class that defines a "process" method, performing the parallel part of the computation and saving it to S3.

最小的CloudCrowd action是一个简单的Ruby类，它被用来定义一个“进程”方法，执行计算中的并行部分，并保存到S3。

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The revised policy and action plan work in parallel.

修订后的政策和行动计划并行开展工作。

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The FAA noted that its directive also signals international aviation authorities to take "parallel action" regarding their own airlines.

CNN: U.S., Japan ground Dreamliners over fire risk

The authority added that it had alerted the international aviation community of its airworthiness directive, so that other authorities could take parallel action to cover the fleets operating in their countries.

BBC: Dreamliner: Boeing 787 planes grounded on safety fears

When the FAA issues an airworthiness directive, it also alerts the international aviation community to the action so other civil aviation authorities can take parallel action to cover the fleets operating in their own countries.

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