此方法有一个常见的用例，如下所述。说明下方的按钮使用示例值填充 API Explorer，或打开全屏 API Explorer 显示使用这些值的代码示例。如果您更改值，代码示例也会动态更新。

This example retrieves a list of content regions that the YouTube website supports. The example sets the hlparameter value to es_MX, indicating that text values in the API response should be returned in that language. The parameter's default value is en_US.