正射影

例句：

1. 1. The camera captured the scene with a perfect orthographic projection.
   相机以完美的正射投影捕捉了场景。
2. 2. The mathematician used a ray to trace the path of the light in the room.
   数学家用一束光线来追踪房间内光线的路径。
3. 3. The scientist conducted an experiment using a prism to observe the reflection of light.
   科学家使用棱镜进行实验，观察光的反射。