In other words, you can ask the server, "give me all annotations of resource x," and it will use the index to provide a quick response.
换句话说，可以请求服务器“把与资源X相关的所有注解给我”，服务器会使用索引提供快速响应。
2
These organs index the rotation of each joint and the tension in each muscle and relay that information to the brain, which generates an articulated body representation in response.
The index was developed by testing the glucose response to a standard amount of carbohydrate against a reference food, either pure glucose (index number 100) or white bread (71).