Graphical user interface greatly facilitate the use of ordinary computer users, but it still has so many restrictions that the computer is difficult to really integrate into people's work and life.
图形用户界面在极大地方便普通用户使用计算机的同时，也带了诸多的限制，使计算机仍然难以真正融入人们的工作和生活。
User interface prototypes can greatly facilitate the process of validating business use cases with users.
用户接口原型能够大大促进验证用户用例的过程。
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