This combination, including a modifiable parameter, allows you to define the direction of the transformation.

这个组合，包括可修改的参数，使你能够定义转换的方向。

youdao

The name of the parameter doesn't matter, because it is ignored during transformation, but it is better to select a name that properly identifies it as an exception being thrown.

在转换过程中，参数名是可以被忽略的，但最好还是定义一个合适的名称（以备异常抛出时正确提示）。

youdao

For example, the toUpper service takes a single parameter named operand and returns the upper case transformation of the resource identified by the URI supplied as the argument.

例如，toUpper服务带有一个叫做operand的参数，并且返回参数uri所表示的资源的大写形式。

youdao