The Session Facade pattern can be used with both known and unknown actors.

会话虚包模式可用于已知的和未知的参与者。

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But when he plotted his results, he found that these diverse events fell into a regular pattern. It was as if the chaos of war seemed to comply with some hitherto unknown law of nature.

当他把这些数据作图时，发现这些性质不一的战争却呈现出某种有规律的模式，似乎战争的混乱也遵循着一些至今还无人知晓的自然法则。

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Data Mining, also referred to as Knowledge Discovery from database, is to abstract the potential, unknown and useful information or pattern from the large database or data warehouse.

数据挖掘，又称数据库中的知识发现，是指从大型数据库或数据仓库中提取隐含的、事先未知的、潜在有用的信息或模式。

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