苏格兰学生发明"酒吧交际球"

　　People using it have to lean close to each other so they can talk and listen to each other. The design cuts out most of the ambient noise.

　　人们在球里交谈的时候需要互相靠近，这样他们才能交谈并倾听对方。而这种设计会过滤掉大部分的环境噪音。