- 1
Something that does not happen or exist often — an uncommon thing. "It's a rarity to see snow here" means seeing snow there almost never happens. It can also describe how uncommon something is in general, like "the rarity of the disease."
稀有的事物；罕見（性）
組成rare + -ity (a state or quality, turning a describing word into a noun).
同家族的字
- rarerarity is built on the describing word rare
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
raritynoun/ˈɹɛəɹəti/
- 1
A measure of the scarcity of an object.
- 2
chemistrynatural-sciencesphysical-sciencesThinness; the property of having low density
- Only the increasing rarity bothered him, and he thought that perhaps it was this which had turned the heads of other travellers and excited those absurd tales of night-gaunts whereby they explained the loss of such climbers as fell from these perilous paths.
- 3
A rare object.
- Plant breeding is always a numbers game.[…]In addition, we are looking for rare alleles, so the more plants we try, the better. These rarities may be new mutations, or they can be existing ones that are neutral—or are even selected against—in a wild population. A good example is mutations that disrupt seed dispersal, leaving the seeds on the heads long after they are ripe.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。