The message contains the aircraft registration number in the header of the message, with the body of the message containing the actual weather information.

邮件包含飞机注册编号的标题中的信息，以电子邮件的正文中包含的实际天气信息。

youdao

If some of the request data is transferred in the SOAP header part of the request message, you can call this an explicit header.

如果这些请求数据在该请求消息的SOAP消息头部分中传送，那么用户就可以调用这个显式消息头。

youdao

The requestor inserts a BASE64-encoded X509 certificate into the header of his message and sends the message to the Gateway Service endpoint.

请求者将以BASE64编码的X509证书加入到他的消息的消息头中，并将消息发送给网关服务端点。

youdao

As Apple is using the reply-to address of a message's User Data Header to identify the origin rather than the raw source, receiving iPhone owners risk being fooled by a phishing attack (or just a dishonest acquaintance) that poses as a contact or a company.

ENGADGET: iPhone reportedly vulnerable to text message spoofing flaw