We could use the context object to obtain the calling request, look for the named parameter "operand", obtain its URI and issue a sub-request for that resource.

我们可以使用上下文对象来获得调用的请求，寻找命名参数“operand”，获得其uri并对该资源发出一个子请求。

youdao

The extension handler chain is executed upon receiving a RRD request by calling each extension handler that matches some extension data that is attached to the RRD request.

扩展处理程序链在接收 RRD 请求时执行，方法是调用每个与附加到 RRD 请求的某些扩展数据匹配的扩展处理程序。

youdao

This enrichment is done within the request flow by calling out to a customer information system, implemented using a Service Invoke primitive.

此充实是通过调用客户信息系统在请求流中执行的，并且使用服务调用原语实现。

youdao

To request access to contact data, call theABAddressBookRequestAccessWithCompletion function after calling the ABAddressBookCreateWithOptions function.

ENGADGET: Apple seeds iOS 6 beta 4 to developers: here's the changelog

He is now calling for a "reasonableness" clause to be introduced to the act so that any request for information has to be reasonable and relevant to the workings of a council.

BBC: FoI requests 'hamper' Prestatyn Town Council