fill-in reflector

• 辅助反光镜

fill-in reflector的用法和样例：

例句

1. He broke the reflector of his car the first time he drove.
   他第一次开车，就把汽车的反光镜给碰坏了。
2. The inner surface is to be metalized as a reflector so the finish is of more importance than the composition.
   内表面要像反光镜一样的具有金属光泽，所以表面质量要比材质的成分更重要。