/rɪˈflektə(r) ||; rɪˈflɛktɚ/noun[C] 1 a surface that sends back (reflects) light, heat or sound that hits it 反射器；反射体
2 a small piece of glass or plastic on a bicycle or on clothing that can be seen at night when light shines on it （自行车上的）反光镜；（衣服上的）反光片