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同义词: rareness infrequency
同义词: tenuity low density
以上来源于: WordNet
N-COUNT If someone or something is a rarity, they are interesting or valuable because they are so unusual. 稀有物; 罕见之人 [journalism]
Sontag has always been that rarity, a glamorous intellectual.
桑塔格一直都是那种与众不同、极有魅力的知识分子。
N-UNCOUNT The rarity of something is the fact that it is very uncommon. 稀有
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。
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