SBBs refining ABBs (building blocks) can be either acquired or developed.

精简了 ABB 的 SBB（构建模块），可以获得或者开发。

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As with ABBs, granularity of SBBs varies from state to state and, generally, increases from left to right as solution states are achieved.

有了A BB, SBB的微观架构在状态之间是不同的，从左至右得到增加，因为获得了方案状态。

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