In truth, their success stems from a combination of factors: They both raise the level of abstraction and automate the transformation of information representation from higher to lower levels.

实际上，它们的成功源于一些因素的组合：它们都提高了抽象层次，并且将从较高到较低层次的信息表示的转换自动化。

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A third combination is to integrate the at and st into one integrated test level (IT).

第三种组合是将验收测试和系统测试集成到一个集成测试级别(IT)。

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Server clinic often advocates "dual-level" programming — combination of a couple of different languages — to exploit the strengths of each.

服务器诊所经常提倡“双级”编程-组合两种不同语言-来利用各自的长处。

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They are curbing run-away energy with a combination of micro-level controls (for individual servers, power distribution units, air-flow controllers, and cooling units) as well as macro-level controls and policies (for racks of servers, rows of racks, and entire data centers).

FORBES: The Growing Energy Demands Of Living Your Life In The Cloud

The ability to really understand buildings at this level requires a combination of skills found in both facilities knowledge and IT management.

FORBES: Written by Dave Bartlett

As companies are using favourable tax jurisdictions overseas there needs to "a combination of action at the international level as well as beef up our own capacity to deal with it".

BBC: Vince Cable attacks corporate 'tax abuse'