| 单词 | sandwich coin |
| 释义 | sandwich coin sandwich coin n.（名词）A coin having a layer of one metal, such as copper, between exterior layers of a different metal, such as silver.简易硬币，包层硬币：一种硬币，夹层为一种金属（如铜夹层），外层为不同金属（如银外层） |
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