从亚马逊下载电子书。 必要的话，转换电子书格式。 复制MOBI文件。 连接Kindle与电脑。 打开Kindle。 打开“文档”文件夹。 粘贴MOBI文件。 等待MOBI文件传输完成。 弹出Kindle。

I'm interested in that, but I only have a few mins. Can you give me at most the first 500 characters of a detailed explanation in English about that?
If you have an Amazon eBook that you want to add to your Kindle via USB, go to Amazon and log in if necessary, then do the following:  Select Account & Lists  Click Your Content and Devices  Click ... to the left of a book. Click Download & transfer via USB  Select your Kindle from the drop-down box. Click OK If your eBook isn't already in PDF, AZW, or MOBI format, you'll need to do the following before you can put it on your Kindle:  Go to https://www.epubconverter.com/epub-to-mobi-converter/ i