| 单词 | 如铜 |
| 释义 | DEFINITIVE EXAMPLES 权威例句〔billon〕An alloy of gold or silver with a greater proportion of another metal, such as copper, used in making coins.金银合金：金或银与大部分其他金属，如铜的合金，用于铸币美国传统〔filled gold〕A relatively inexpensive metal such as brass with a surface layer of bonded gold.镀金的金属：一种带有合金表层的相对便宜的金属，如铜美国传统〔sandwich coin〕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）美国传统Copper, brass and bronze are all affected by verdigris if they are exposed to moist air for a long period of time.假如铜、黄铜和青铜长时间暴露在潮湿的空气中，它们都会受到铜绿的影响。剑桥国际 |
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