This craft is very special: a transparent crystal ball landed in a pair of coral.

这件工艺品很特别：一个透明的水晶球，落在珊瑚丛中。

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Few have got a pair of crystal eyes like his.

很少有人像他那样生着一副水晶般的眼睛。

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An oblong crystal the size of a cigarette packet was found on a ship next to a pair of dividers, suggesting that it was part of the navigational equipment.

科学家在船只废墟中一对圆规旁边发现一块香烟盒大小的长方形水晶，表明这是航行设备的一部分。

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An oblong crystal the size of a cigarette packet was next to a pair of dividers - suggesting it was part of the navigational equipment.

BBC: 'Viking sunstone' found in shipwreck

The gift reflects the outsized ambitions the retail-chain family has for the Crystal Bridges Museum of American Art, a complex of eight gallery pavilions it has helped build around a pair of ponds in the company's northwestern Arkansas hometown of Bentonville (population 35, 301).

WSJ: Wal-Mart Heirs Give $800 Million to Museum