MOBI 转 EPUB
EPUB 是几乎所有非 Kindle 阅读器都支持的开放标准，把老旧的 MOBI 书转过去就能随处阅读。
来自
To
MOBI
An older Amazon Kindle ebook format, still supported by classic Kindle devices.
EPUB
The open ebook standard used by most readers and stores. Text reflows to fit any screen size.