혹시 ray under(으)로 찾으셨나요?

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• 황반변성에 필요한 선글라스 /b> Sunglasses should block all UVA, UVB, and UVC rays. The photometer should find that your sunglasses block all UV radiation or light under 400 nm in wavelength blog.naver.com · 2005.07.07