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1. Oxford American Dictionary

   polarizing filter

   • IPA[ˈpōləˌrīziNG ˈfiltər]

   • n.
     a photographic or optical filter that polarizes the light passing through it, used chiefly for reducing reflections and improving contrast. Two polarizing filters are often used together, such that rotation of one of them results in a neutral density filter of variable density.

   • noun: polarizing filter, plural noun: polarizing filters

2. • 更多解釋

   polarizing filter

   • n.
     a photographic or optical filter that polarizes the light passing through it, used chiefly for ...

   Oxford Dictionary