Sass and LESS are meta-languages meant to simplify and improve the reusability of CSS3 by introducing nesting, variables, inheritance, mixins, and other enhancements.
Sass和 LESS 是一种元语言，通过引入嵌套、变量、继承、mixin以及其它的强化来简化和提高对CSS3的可重用性。
2
We'll come back to the JSP after that to see what more we can do to add support for different national and metalanguages.
然后，我们将回头看看 JSp，查看可以再做些什么来添加对不同本地语言和元语言的支持。
3
Like SGML before it, XML is a meta-language: it is a syntactic basis for defining further languages.