Fortunately, using a generator is much less work than understanding all the conceptual issues of program flow and state.

幸运的是，使用生成器比理解程序流和状态的所有概念性问题容易得多。

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Here the entire set of of flow activities runs within one single technical transaction, navigation is all done in memory, and the intermediate state is not saved to a database.

这里，所有流活动在一个技术事务内运行，导航全部在内存内完成，中间状态不会存储到数据库中。

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Flow is a state that we can all experience.

心流是一种人人都能体验到的状态。

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Even if they controlled the disputed oil-rich area around Kirkuk, their foes could block the flow of oil which is why maps in party headquarters show a Kurdish state arching all the way from the Mediterranean to the Persian Gulf.

ECONOMIST: Iraq and the Kurds