https://blog.wongcw.com/2020/09/23/%e5%be%ae%e8%bb%9f%e5%b7%b2%e7%8d%b2openai-gpt-3%e8%aa%9e%e8%a8%80%e6%a8%a1%e5%9e%8b%e7%9a%84%e7%8d%a8%e5%ae%b6%e8%a8%b1%e5%8f%af/