declarative language meaning in English

说蔑言
说明性语言
宣告语言

Wsdl is a declarative language
Wsdl是一种声明性的语言。
More importantly , if the declarative language is not expressive enough for your needs ,
更重要的是，如果声明式语言的表达能力不足以满足需要，
Since the macro expands to regular code anyway , you can always switch back to imperative programming if the declarative language doesn t suit your needs
因为宏可以以任何方式展开常规代码，所以如果声明式语言不能满足需要，那么随时可以切换回命令式编程。
The web application formats working group is charged with the development of a declarative format for specifying user interfaces , in the manner of xul or xaml , as well as the development of xbl2 , a declarative language that provides a binding between custom markup and existing technologies
Web application format工作组负责按照xul或xaml的方式开发指定用户界面的声明性格式，以及xbl2的开发，这是一种在自定义标记和已有技术之间提供绑定的声明性语言。