壹蘋派生活美語 走進蛋白石和人造蛋白石的炫目雙重奏
Opal and Opalite: Similar Looks, Different Stories
走進蛋白石和人造蛋白石的炫目雙重奏
Opal forms from water and silica, the main substance found in sand. As water moves through the earth, it collects silica from sandstone. This silica-rich water then flows into cracks in rocks. After the water slowly dries up, the silica is left behind and gradually hardens into a solid over millions of years. As a result, opal often contains a small amount of water trapped inside. There are several types of opal.
蛋白石是由水和沙子中的主要物質 ── 二氧化矽形成。當水流過土壤時，會從砂岩中帶走二氧化矽。這些富含二氧化矽的水便接著流入岩石的裂縫中。當水分緩慢蒸發乾燥後，留下來的二氧化矽會在數百萬年間逐漸變硬成固體。因此，蛋白石的內部通常含有被封存在其中的微量水分。蛋白石有幾種不同的類型。
生活必備字詞：
- dry up 乾涸
- leave behind... 留下……
- solid n. 固體
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本文節錄自《常春藤生活英語》雜誌，完整內容請見十月號。
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