demonstration effect

例句：

1. 1. The teacher'sdemonstration helped the students understand the concept better.
   老师的示范帮助学生更好地理解了这个概念。
2. 2. Thenew product's demonstration effect was impressive.
   新产品的示范效果令人印象深刻。
3. 3. The demonstration effectof the new technology is expected to besignificant.
   新技术的示范效应预计将会显著。