Roblox has users in different languages and a machine learning system for auto-translation. Design a system that would automatically translate between different people on different servers.

Focus on the architecture of the translation system, considering how it will integrate with existing Roblox features. Discuss the data flow from user input to translation output, including how you would handle real-time translation across different servers. Address potential challenges such as latency, context preservation, and slang or idiomatic expressions. Consider the user experience and how to ensure that translations feel natural and maintain the intended tone. Finally, think about scalability and how the system can adapt to new languages or dialects as Roblox expands its user base.