A key technique for ensuring timely resource release is to maintain a strict hierarchy of ownership; with ownership comes the responsibility to release the resource.

确保及时的资源释放的一个关键技巧是维护所有权的一个严格层次结构，其中的所有权具有释放资源的职责。

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In this situation, you can either catch up the resource from the stream, release your version of the resource to the stream, or merge your work and the stream resource.

在这种情况下，您可以捕获来自流的资源，将您制订的该资源的版本发布到流中，或者也可以把您的工作与流资源合并起来。

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Conflicts arise when you modify a resource and try to release it when there is a more recent version in the stream.

如果您修改了某个资源并试图发布它，而此时流中正好有该资源的一个更新的版本，那么就会发生冲突。

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Resource: iPhone5 2.1 million devices sold details from Apple news release.

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So when it came time to write, the authors faced a dilemma: Should they release a traditional fitness book and receive industry nods, or create a resource with sass that could make serious waves but risk alienating more timid readers?

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Last week, a press release from big names like Larry Page, Ross Perot and James Cameron about combining space exploration with resource extraction made it all but obvious that somebody was going to announce some very ambitious plans surrounding asteroid mining.

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