Salt was a very precious expensive commodity in the middle ages. It was also used for medicinal purposes.

在中世纪，盐对人们来说是非常珍稀且昂贵的商品，还可以作为医疗用品使用。

youdao

One thing remains indisputable: With the price of precious metals soaring, minting those London Olympic MEDALS will be more expensive than ever before.

有一点毋庸置疑：重金属的上升，意味着铸造伦敦奥运会金牌的成本比以前更高了。

youdao

This is because it will be a complete waste if it is done poorly given the fact that it is one precious and expensive metal.

这是因为它将是一个完整的浪费如果做得不好鉴于它是一个宝贵的和昂贵的金属。

youdao

To Bagehot's untutored ears, this sounds woolly and vainglorious: aircraft carriers are hugely expensive, hugely vulnerable, and far too precious to put in harm's way unless an overwhelming national interest is at stake.

ECONOMIST: George Robertson punches above his weight

Comtes Lafon even produces a few precious cases of Montrachet Grand Cru, one of the most famous and expensive white wines in the world.

WSJ: Jay McInerney on M?con's Affordable White Burgundies | On Wine