As you start to drill down into the Portal application patterns, you find the following diagram which summarizes the various types of functionality found in each business and integration pattern.

在研究Portal应用程序模式时，您会找到下面这张图，它总结了每个业务和集成模式中的各种功能。

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The drill down pattern involves obtaining detailed information about an entity that you already have found.

逐步深入模式涉及到获得有关您已经找到的条目的详细信息。

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But drill is boring, especially repeating the pattern.

但是练习很枯燥，㣕特别是句型练习。

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But he believes more cores are needed from different regions, and is proposing to drill in other parts of the Arctic, notably areas north of Russia and east Asia, to establish the global pattern.

BBC: Coal's toxic legacy to the Arctic