Act as a multilingual education specialist with 10+ years of experience in integrating AI tools into diverse learning environments. Design an AI-powered real-time language translation system tailored for multicultural classrooms. The system should support [primary languages spoken by students], provide accurate translations with minimal latency, and be accessible via [specific devices such as tablets or smartboards]. Include features like [customizable vocabulary lists for subject-specific terms] and a feedback mechanism for teachers to improve translation accuracy over time. Ensure the system respects cultural nuances and adapts to regional dialects. Provide a detailed plan for implementation, including training for educators, cost estimates, and strategies for overcoming potential challenges such as technical limitations or resistance to new technology.