In fact, it became so valuable that it was known as white gold and spies were sent to China to discover what they did to the clay to produce such high-quality merchandise.

事实上，它变得如此珍贵，以至于被称为“白金”，间谍被派往中国，以查明他们如何处理粘土，从而生产出如此高质量的商品。

youdao

The new information could even be useful in parts of the United States or Western Europe where surface monitors, still the gold standard for measuring air quality, are sparse.

这些新的信息对于美国或西欧一些地区也将大有裨益，那些区域长久以来都使用地表探测器的结果作为衡量空气质量的标准。

youdao

The 18-karat gold Faraone Mennella bracelets shown here are studded with very high-quality white, brown, and champagne pave diamonds.

照片中的Faraone Mennella 18 K金手镯上镶满了品相非常好的白钻、棕钻和香槟钻。

youdao

Fronteer announced that drilling by Newmont USA Limited, a wholly owned subsidiary of Newmont Mining, has intersected additional bonanza-grade, near-surface oxide gold at Sandman, one of three high-quality Nevada gold projects in Fronteer's future production platform.

FORBES: Magazine Article

This high-quality gold is given to celebrate special occasions, such as birthdays, and purchased for a bride at her wedding.

FORBES: China And India Stoke Global Gold Demand

These would not be countries per se, but more like a network of private individuals and corporations, who prefer to do business in high-quality gold-linked currencies.

FORBES: One Path To A Global Gold Standard