元数据描述标签。
For now, however, I'd complete the Subject property as if it were a meta description.
但就目前而言，我完全就好像它是一个元描述的主体属性。
Many times this problem is actually created innocently — repeating the brand name on each page as the page title or just reusing one meta description for all pages on a site.
很多时候，这个问题实际上并非有意如此-品牌名称重复出现在一个接一个页面的title里，或者刚好在一个网站所有页面的描述标签里重复。
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