1，流程介绍

https://zhuanlan.zhihu.com/p/157343999?from_voters_page=true
转换->邮箱发送->终端下载

2，转换器

https://pdf2kindle.com/zh/
https://convertio.co/zh/download/96b9d2cfd4da734fdf782c0a2949c4d9bc567c/
或者直接转为word文件

3，设备邮箱查询

https://www.amazon.cn/hz/mycd/digital-console/devicedetails?deviceFamily=KINDLE_APP

4，云端书籍删除

https://jingyan.baidu.com/article/2fb0ba40a5ef2800f3ec5f74.html
https://www.amazon.cn/hz/mycd/myx#/home/content/pdocs/dateDsc/