https://blog.wongcw.com/2020/09/29/%e5%be%ae%e8%bb%9f%e7%8d%b2gpt-3-%e7%8d%a8%e5%ae%b6%e6%8e%88%e6%ac%8a%e9%a6%ac%e6%96%af%e5%85%8b%ef%bc%9aopenai%e4%b8%8dopen-%e4%ba%86/