仅限英语

请求：“ http://example.com ”

GET / HTTP/1.1
Host: example.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:53.0) Gecko/20100101 Firefox/53.0
Accept: text/html
Accept-Language: en
Accept-Encoding: gzip, deflate
Connection: keep-alive

客户只接受英语内容 - 语言。