colored crystalline gem, late 13c., from Old French topace (11c.), from Latin topazus (source also of Spanish topacio, Italian topazio), from Greek topazos, topazion, of obscure origin. Pliny says it was named for a remote island in the Red or Arabian Sea, where it was mined, the island so named for being hard to find (from Greek topazein "to divine, to try to locate"); but this might be folk etymology, and instead the word might be from the root of Sanskrit tapas "heat, fire." In the Middle Ages used for almost any yellow stone. To the Greeks and Romans, possibly yellow olivine or yellow sapphire. In modern science, fluo-silicate of aluminum. As a color name from 1908.
实用例句
1. Indigo develop Sapphire paper surface treatment technologies and Topaz plastic film surface treatment technologies.
Indigo研制出了Sapphire纸张表面处理技术和Topaz的塑料胶片表面处理技术.
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2. She was never the same after Father married Topaz.
在爸爸娶了托巴思之后她就变得不太一样了.
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3. A pale yellow variety of crystalline quartz resembling topaz.
一种类似黄玉的黄色石英,等次稍低.
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4. The emerald, the ruby, and the topaz gleam upon its dress.
那翠绿的 、 艳红的 、 嫩黄色的羽毛闪闪发光.
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5. The golden variety of precious topaz is quite uncommon.
