request header

例句：

1. 1.The server needs to send a request header to indicate the type of content being requested.
   服务器需要发送一个请求头来指示要请求的内容类型。
2. 2. The website uses HTTP/2 to improve efficiency by sending a single request header instead of multiple requests.
   该网站使用HTTP/2通过发送单个请求头而不是多个请求来提高效率。
3. 3.When making a request to a web service, it's important to include a proper request header to ensure the data is correctly received and processed.
   在向web服务发出请求时，重要的是包含适当的请求头以确保数据被正确接收和处理。