| 词汇 | troy |
| 词根词缀 | 词源： 1390, standard system of weights for gems and precious metals, from Troyes, city in France (ancient Tricasses), former site of a fair at which this weight is said to have been used. Many medieval towns had their own standard weights. The pound troy contains 5,760 grains and is divided into 12 ounces. |
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