Create the catalog structure and add product information, including name, category, stock keeping unit (SKU) number, and image.

创建目录结构并加入产品信息，包括名字、类别、库存单元(sku)号和图像。

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Usually, a unit test exercises some particular method in a particular context, thus it falls in the broader category of white box testing.

通常情况下，一个单元测试在特殊环境下只测试一些特殊的方法，因此它将白箱测试分为更广泛的种类。

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When we write unit tests we should strive for code that is free of side effects, and IO certainly falls under this category.

当我们编写单元测试时，我们应该尽量编写没有副作用的代码，IO当然也属于这一类。

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DisplaySearch expects emerging markets to play a key role in the category, with unit expected to quadruple to more than 10 million in 2014, from 2.5 million in 2010.

FORBES: Internet Creeps Into New TVs; In 2010, 21% Had Connectivity

Reactor number 3 remained in the worst but still operable category, the only unit in the nation with that designation.

FORBES: NRC Renews License for Nation's Largest Nuclear Plant, Despite a Long History of Problems

This unit represents one of the two NEW products in the HIGH BRIGHTNESS category that SIM2, the company hailed by world's most famous Movie Directors as the top performing in projection technology, is unveiling this year at CEDIA Expo.

ENGADGET: SIM2's $158k CinemaQuattro 4K DLP projector is for hundred seat home theaters