认识 CastReader用于演示与文档工作，支持PDF阅读与问答对话。 官网简介（原文）：Read webpages, PDFs, Kindle books, and AI answers aloud with synced highlighting in 9 languages. German now has full extension support and a growing voice library.PDF阅读问答对话可以从这些任务开始PDF阅读问答对话
