由于许可限制，您需要分别下载实际的库jar文件。

Because of licensing restrictions, you need to download the actual library JAR file separately.

youdao

Windows：模仿Windows 2000操作系统(由于许可限制，PLAF只能在Windows平台下使用)。

Windows: Emulates the Windows 2000 operating system (because of licensing restrictions, this PLAF can only be used under a Windows platform).

youdao