Tarnishing Mechanism and Anti-tarnishing Techniques of Copper and Brass Coins
由于铜币使用价值的特殊性,流通、观赏过程中表面残留的汗液是变色的主要原因之一。
A coin, usually of small denomination, made of copper or a copper alloy.
铜币用铜或铜的合金制成的硬币，通常为小面值
He had only a few coppers in his pocket.
他口袋里只有几个铜币。
He had only a few coppers with him.
他身边只有几枚铜币。
It will all be copper.
里面通通都是铜币。”
He gave me my change in pennies.
他找给我便士铜币。
Would you mind giving me the six pence in coppers?
劳驾给我6便士的铜币。
Will you mind giving me the sixpence in copper ?
请给我6便士铜币好吗？
shower coppers upon sb.
把大量铜币撒向某人
toss (=cast) a copper to a beggar
把一枚铜币扔给乞丐
Pennies, nickles, dimes and quarters are United States coins.
1分铜币、5分镍币、1角银币和2角5分银币是美国硬币。
Look, here are some shell money and copper coins.
看，这里是一些贝壳钱币和铜币。
The silver coinage was repeatedly debased with copper vellon.
银币一再用铜币维隆来替代，实行贬值。
So he threw away all his copper coins and filled his pockets and his bag with silver coins.
于是，士兵把铜币丢掉，把口袋及背袋装满了银币。
It is this coin that will see out the Schilling currency when the Euro coins and banknotes are issued in 2002.
铜币将一直流通到欧元纸币和硬币开始发行的2002年。
Study on the corrosion of silver and copper coins displayed in the China Numismatic Museum;
中国钱币博物馆部分陈列银币、铜币的腐蚀产物及成因研究
This coin was about 2,400 year ago.
这枚铜币大约有2400年历史。
He had only a few coppers in his pocket when he came to Detroit.
他来到底特律时,口袋里只有几枚铜币。
a great profit accrues to the Government from the coinage of copper
政府因铸造铜币而获大利。