| 单词 | carat |
| 释义 | Word Frequency carat(ˈkærət) noun 1. a measure of the weight of precious stones, esp diamonds. It was formerly defined as 3.17 grains, but the international carat is now standardized as 0.20 grams 2. Usual US spelling: karat a measure of the proportion of gold in an alloy, expressed as the number of parts of gold in 24 parts of the alloy Word origin C16: from Old French, from Medieval Latin carratus, from Arabic qīrāt weight of four grains, carat, from Greek keration a little horn, from keras horn |
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