名词
中文翻译：折射率
同义词：
['refractivity', 'opacity例句：1. The glass is very transparent', 'but its refractoriness makes it difficult to see through.（这玻璃很透明，但是它的不透明度使得它难以透过。）2. The scientist found that the material had a high refractive index', 'which made it useful for optical devices.（科学家发现这种材料具有高折射指数，这使得它对于光学设备非常有用。）']
例句：
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1. The glass is very transparent, but its refractoriness makes it difficult to see through.
这玻璃很透明，但是它的不透明度使得它难以透过。
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2. The scientist found that the material had a high refractive index, which made it useful for optical devices.
科学家发现这种材料具有高折射指数，这使得它对于光学设备非常有用。
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3.The oil has a low refractive index, making it easier to mix with other substances.
这种油的折射指数较低，使其更容易与其他物质混合。