/rɪ'flektə(r); rɪ`flɛktɚ/
n
1 thing that reflects heat, light or sound 反射热、光或声音的东西; 反射器; 反射物.
2 red disc fitted to the back of a vehicle; disc or strip fitted to cycle wheels, etc making them visible in the dark by reflecting the lights of other vehicles 机动车辆尾部的红色反光器; 自行车轮等上的圆形或条形反光镜. =>illus at App
1 见附录1插图, page xiii.

n[C]
tire, lock, spoke, reflector, tyre, pedal, handlebars
a small piece of plastic that is fastened to a bicycle or to a piece of clothing, so that it can be seen more easily at night. All bikes sold in the UK must be fitted with reflectors.
a surface that reflects light