secondary extra reflection

例句：

1. 1. The researcher found that the extra reflection of the light could be used to enhance the accuracy of the measurements.
   研究者发现，光线的额外反射可以用来提高测量的准确性。
2. 2. In the study, we observed the secondary extra reflection of light from a mirrored surface.
   在研究中，我们观察到了从镜面表面产生的光的次要额外反射。
3. 3. The scientist noticed that there was an additional reflection of sunlight on the ground due to the angle of the sun's rays.
   科学家注意到由于太阳光线的角度，地面上有额外的阳光反射。