并非所有打印机都支持打印多份。
它支持键盘和鼠标，同时还支持打印机和可读性usb的接口。
It supports keyboards and mouses. It recognizes printers and reads USB sticks.
Mac用户能够轻易地使用任何支持打印命令的程序来建立PD F文件。
Mac users can easily create PDF files with any program that supports the Print command.
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