Using every declaration just once means making strict use of selector grouping.

每种声明只使用一次意味着对选择器进行更加严格的分组。

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If you're using interfaces, the command opens the declaration of the element - which is an interface.

如果您正在使用接口，则该命令会打开元素的声明—它是一个接口。

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In fact, since "using every declaration just once" might mean a higher number of selectors, this could even result in a bigger style sheet.

事实上，应用“每种声明只使用一次”的规则，很可能造成更多数量的选择器，从而使得文件更大。

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Officials warned Sunday -- in advance of the declaration about the presidential winner -- that they were ready to carry out their longstanding policy of using deadly force against people who attack government buildings.

CNN: June 24, 2012 -- Updated 2308 GMT (0708 HKT)