When a user agent can't parse the selector, it must ignore the declaration block as well.
当一个用户代理不能解析某个选择器的时候，它必须忽略整个声明块。
A CSS rule consists of a selector and a declaration block.
CSS规则由一个选择符和一个声明块组成。
You can reduce this font size by assigning 62.5% to the font-size property of the body selector (also known as the block-level element) like shown in Listing 2.
通过为正文选择器（body selector，也称为块级元素）的font-size属性分配 62.5% 的值可以减小这个字体大小，如清单 2 所示。
The block repair selector outputs a block repair selection signal for replacing the defective cell block with another cell block in response to a cell block address signal.
所述块修复选择器响应于单元块地址信号输出块修复选择信号，以用另外的单元块替换所述缺陷单元块。
Each rule has two fundamental parts, the selector and the declaration block.
每条规则有两个部分：选择符、声明。
Each rule has two fundamental parts, the selector and the declaration block.
每条规则有两个部分：选择符、声明。
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