prism block

例句：

1. 1. The scientist used a prism block to help her analyze the data.
   科学家使用棱镜块帮助她分析数据。
2. 2.The teacher explained the concept of light with a prism block demonstration.
   老师用棱镜块演示解释了光的概念。
3. 3.The engineer used a prism block to measure the angle of incidence.
   工程师使用棱镜块测量入射角。