You define a variable with a single declaration statement.

可以使用单个声明语句定义变量。

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The type shape in the class diagram refers to a single declaration location for the partial class.

类别图表中的型别图案是指部分类型的单一宣告位置。

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Use a single space before each namespace declaration, no space on either side of the equals sign, and double quotes around the namespace URI.

每个名称空间声明之间有一个空格，等号和包含名称空间的URI两侧没有空格。

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That single, simple declaration created an IT (and cultural) architecture that catalyzed and stoked the stunning growth of Amazon Web Services, which is thought to be a billion-dollar business unit after only a few short years of growth.

FORBES: Welcome To The API Economy