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　　1. concept概念 观念 设想

　　Do you think home video players would replace movie theaters and force them out of the entertainment businesses?

　　We certainly face to the great challenge from the DVD industry， that‘s why I think we have to revolution our concept about the movie showing. As I said， the movie theater should not just be a place to watch a film， but place to meet people.

　　2. concerning关于

　　You must be familiar with all safety preceduling operation and maitainment this equipment.

　　3. concert音乐会 演奏会

　　Did you see just now， I want to ask he ..........