他们有丰富的知识，在网络和用户互动方面。
They have a wealth of knowledge about the Web and how users interact with it.
设计师们在用不断进化的视觉语言来和用户互动。
Designers use a constantly evolving visual language to suggest interactions.
但这一切有两个前提：1设计师要很好的融合图表，动画，录像和声音；2设计师要遵循实用性和用户互动的指导原则。
Under two conditions: 1 if designers find the right mixture between graphics, animation, video and sound and 2 if designers follow the guidelines of usability and user interaction.
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