The silver coinage was repeatedly debased with copper vellon.
银
一再用铜
来替代，实行贬值。
The silver coinage was repeatedly debased with copper vellon.
银一再用铜来替代，实行贬值。
Pennies, nickles, dimes and quarters are United States coins.
1
铜、5镍、1角银和2角5银是美
硬。
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