一个小巧的pdf文档阅读器，完全免费。有了它，你无须为仅仅阅读pdf文档而下载和安装庞大的adobe reader，而且知识兔启动快速，对中文支持非常好。
下载仅供下载体验和测试学习，不得商用和正当使用。
下载体验
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