Expression language - Normally used in form input field names and JSP tags.

表达式语言—通常用于表单输入字段名称和JSP标记。

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Defined initially as a main feature of JSTL, the expression language was later incorporated into the JSP 2.0 standard.

表达式语言最初是JSTL的一个主要特性，后来合并到了JSP 2.0标准。

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JSF tags support the JSTL expression language; JSP 2.0 will fully support the JSTL expression language as well.

JSF标记支持JSTL表达式语言；jsp 2.0也将完全支持JSTL表达式语言。

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