题目

Today, when a fire breaks out, you can be sure a citizen with a cell-phone camera has posted it to Facebookor Twitter, or sent it to the media．But up to now, that citizen has not been able to easily send images and details of what is happening to the people who need it most: police, firefighters and building-security people who must respond, and whose ability to help is often measured in minutes, if not seconds. That's about to change．A one-year old company called Elerts has developed a system that's designed to mobile and social technologies to speed the flow of information between组词语。 歇（　　） 褐（　　）