UI       
noun  computing specialized uk/ˌjuːˈaɪ/ us/ˌjuːˈaɪ/
 用户界面(user interface的缩写)
abbreviation for user interface: the way in which the information on a computer, phone, etc. and instructions on how to use it are arranged on the screen and shown to the user
  Generally I found this UI to be clear, functional, and pretty self-explanatory.  总的来说,我认为这个用户界面清晰,功能齐全,而且很容易理解。 
 When you design your UIs, make sure that you pay close attention to how you talk to your user.
 - More examples
 - I only wish the company would work on its UI and really consider how people interact with its displays.
 - You may need to present a multi-page UI that requires user input.
 - A standard, easy-to-use UI lets users browse files in a consistent way across apps and providers.
 - He pointed out that users should not have to adapt to new UI conventions when old ones served us so well for so long.
 - You must ensure that your apps offer the basic UI design, features, and functions expected by Android users.