The content should be well written and semantically correct.

网页内容要精心制作，文本语意通顺正确。

youdao

This underlines that you should use DOUBLE indexes if you want semantically correct numeric comparisons.

这里强调了如果想从语义上进行正确的数值比较，则应使用DOUBLE索引。

youdao

Using cascading stylesheets (CSS) is much easier when you insist on making the XHTML as semantically correct as possible.

如果XHTML尽可能保持语义正确，那么使用层叠样式表(CSS)就非常容易了。

youdao