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1. Oxford Dictionary

   refract

   • IPA[rɪˈfrakt]

   英式

   • v.
     (of water, air, or glass) make (a ray of light) change direction when it enters at an angle；measure the focusing characteristics of (an eye) or of the eyes of (someone)

   • verb: refract, 3rd person present: refracts, gerund or present participle: refracting, past tense: refracted, past participle: refracted

2. • 釋義

   v.

   動詞

   • 1. (of water, air, or glass) make (a ray of light) change direction when it enters at an angle the rays of light are refracted by the material of the lens
   • ▪ measure the focusing characteristics of (an eye) or of the eyes of (someone) when refracting patients an ophthalmologist relies on verbal reports