rarity
n. 罕见的人（或物），珍品；稀有，罕见；稀薄
复数 rarities
例句
It was a real prize due to its rarity and good condition.
它是一件真正的稀世珍品，因为它不但稀有而且保存完好。
《柯林斯英汉双解大词典》
The value of antiques will depend on their condition and rarity.
古董的价值依它们的保存状况和稀有程度而定。
《牛津词典》
Now for cost and rarity, spices aren't native to Europe and they had to be imported.
现在由于价格和稀有度，香料不是欧洲本土的，必须进口。
