大概可以这么翻译吧

下面是官方简介

IndexNow

Easy to use protocol that websites can call to notify Bing whenever website contents on any URL is updated or created allowing instant crawling, and discovery of the URL

翻译如下

立即索引

易于使用的协议，每当更新或创建任何 URL 上的网站内容时，网站都可以调用该协议来通知 Bing，从而允许即时抓取和发现 URL

POST /IndexNow HTTP/1.1
Content-Type: application/json; charset=utf-8
Host: <searchengine>
{
  "host": "www.example.org",
  "key": "d8686ef1019841cd8a9170f9acde6378",
  "keyLocation": "https://www.example.org/d8686ef1019841cd8a9170f9acde6378.txt",
  "urlList": [
      "https://www.example.org/url1",
      "https://www.example.org/folder/url2",
      "https://www.example.org/url3"
      ]
}