The Russian Doll pattern has a nested structure with only one global element, such as element "Employee" — as seen in the following example.

Russian Doll模式采用的是仅具有一个全局元素的嵌套结构，如以下示例中的元素“Employee”。

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One of those discoveries is that, like part of a cosmic Russian doll, our universe may be nested inside a black hole that is itself part of a larger universe.

其中一个发现便是，我们的宇宙就像是俄罗斯套娃的一部分，可能栖身于一个黑洞内，而这个黑洞本身又是一个更大宇宙的一部分。

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