refraction

n [U] refracting or being refracted 折射（现象）. =>illus at spectrum 见 spectrum 插图.

reflection (Brit also reflexion), reflective, reflectively, reflectivity, reflector, reflex, reflex angle, reflex camera, reflexion, reflexive, refloat, refocus, reforest, reform, reformation, reformatory, reformed, reformer, reformulate, refract, refractory, refrain, refrain from, refresh, refresher course, refreshing, refreshment, refrigerant, refrigerate, refrigeration, refrigerator, refuel, refuge, refugee, refulgence, refulgent, refund, refundable, refurbish, refusal,