front surface mirror

例句：

1. 1.The car's rear view mirror is reflecting the traffic lights.
   汽车的后视镜反射着交通灯。
2. 2.The teacher pointed to the front surface of the blackboard with a finger.
   老师用手指指向黑板的前表面。
3. 3. The engineer used a front surface mirror to check the alignment of the machine.
   工程师使用前表面镜检查机器的对齐情况。