- 1克拉 (寶石重量單位)；K金純度單位 (常拼作 karat)
A unit used to measure two very different things, so context matters. For gemstones like diamonds, a carat measures weight - 'a two-carat diamond' is heavier, and usually more valuable, than a one-carat one. For gold, ',' usually spelled with a k in this use, measures purity - '24 gold' is pure gold, while lower numbers mean it's mixed with other metals.
From the word’s history
Via Middle French, Italian and Arabic from Greek kerátion 'carob seed, little horn'.
源自希臘文 kerátion「角豆種子」，經阿拉伯文、義大利文傳入。
原始詞典資料3 筆記錄
以下是外部詞典記錄的用法，摘錄並精簡格式，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。
caratnoun/ˈkæ.ɹət/
- 1
A metric unit of mass equal to exactly 200 mg, chiefly used for measuring precious stones and pearls.
- 2
historicalAny of several small units of mass used for measuring precious stones and pearls, equivalent to 189–212 mg.
- 3
A 24-point scale used to measure the purity of gold.
- 18-carat gold is 75% gold by mass. 24-carat gold is pure.
摘錄自 英文維基詞典 English Wiktionary，已精簡格式；依 CC BY-SA 4.0 授權使用，改動後的內容同樣以此授權提供。