Following its keen nose, a dingo prowls the edge of a sand blow-an ever shifting expanse of silica.

在灵敏鼻子的引导下，一只澳洲野狗徘徊在吹沙边缘——永远移动扩张的硅土。

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An LCA tracks, say, a glass jar from the initial extraction of the silica from sand through the 48 hours of cooking at 2, 000 degrees Fahrenheit all the way through its final disposal.

例如，运用LCA技术，可以对一只玻璃瓶的整个生产及使用过程进行追踪，即从其在华氏2000度高温下熔砂48小时提取硅，直至玻璃瓶被用过之后的最后丢弃的全部过程。

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The block is prepared with pulverized fuel ash, natural silica sand and lime through steaming and pressing with a pressure vessel. In particular, a simulated stone layer 3 is added outside the block.

所说的砌块是由粉煤灰、天然硅沙和白灰经高压容器蒸压而成，特别是在砌块的外层有一层仿石层3。

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Obsidian is a kind of black glass formed when the heat of a volcano melts the silica material in sand.

VOA: special.2009.09.16

The company is the second largest producer of commercial silica, which is a sand-like substance used in fracking as well as glass making and chemical manufacturing.

FORBES: Frackers Drilling for IPO Dollars

U.S. Silica specializes in commercial silica used in a variety of industries, the most prominent being "frac sand" to stimulate oil and gas recovery in formations such as shale.

WSJ: Eight IPOs Line Up In U.S.