natural glass

基本解释

In the past few years, natural glass is increasing as one kind of gemstone materials in the market.
近年来，天然玻璃作为宝石材料在市场的销售开始慢慢增多。
For natural and artificial glass aggregates, the "Alkali Reactive Index" can be used to differentiate the reactive from the non reactive aggregates.
“碱活性指数”可作为活性或非活性天然和人工质玻璃集料的判据。
For the main component of natural glass and man-made glass is silicon dioxide, and both of them have no defined crystal structure, it is hard to distinguish from each other.
由于天然玻璃和人造玻璃的主要成分都是二氧化硅，且都是无内部固定结构的材料，使得二者难以区别。

but from the inside, you know, there's a lot of glass.And you can, like... There's a lot of natural light,
但是从里面看，有很多玻璃。这里有很多自然光，
伦敦的金融中心地 - SpeakingMax英语口语达人

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