So Xerox PARC's engineers began to develop user-friendly graphics that could replace all of the command lines and DOS prompts that made computer screens intimidating.

于是，施乐 PARC 的工程师们开始研发友好的用户图形界面，以取代电脑屏幕上那些拒人于千里之外的命令行和 DOS 提示符。