demonstrationsn.课堂演示；示范名词demonstration的复数形式.demonstrationn.示范；表达；实证；示威游行Demonstration of Chinese Traditional Puppets免费欣赏中国传统木偶表演demonstration center for experiment teaching实验教学示范中心demonstration center of experimental teaching实验教学示范中心demonstration area ot environmental immigrants环境移民示范区demonstration set for psychological experiments心理学实验显示仪demonstration project of community co-management社区共菅示范项目Demonstration experiment for semiconductor refrigeration半导体制冷演示实验