这是包含被替换值替换了适当正则表达式匹配项的字符串。

This is the string that has the appropriate regular expressions matches replaced with the replacement value.

youdao

在接下来的例子中，字符串' hello '被传递给存储过程，当存储过程返回时，hello被替换为该存储过程返回的值。

In this next example, the string 'hello' is passed into the stored procedure, and when it returns, hello is replaced with the return value of the procedure.

youdao

事实上，看一看搜寻结果页面上的UR L字符串，你搜寻用的关键字是被包含在一个含有可替换变量的链接中的。

In fact, if you look at the URL in the resulting page, the search term you were looking for is included in the link as a replaceable variable.

youdao