Some of Europe's advantages are hard to copy.
欧洲的一些优势难以复制。
A hard copy of the screen display can also be obtained from a printer.
屏幕显示的硬拷贝也可从打印机那里获得。
Copy Your Presentation to the Computer's Hard drive.
把演示文稿复制到电脑的硬盘驱动器上。
Other attackers may copy that approach, which is hard to defend against, he said.
其他黑客可能会复制这一方法，这是很难防御的。
Other attackers may copy that approach, which is hard to defend against, he said.
其他黑客可能会复制这一方法，这是很难防御的。
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