coin

gold coin,金币；小钱

false coin,n. 假币

silver coin,银币

copper coin,n. 铜币

flip a coin,抛钱币（决定）

toss a coin,抛硬币决定问题；掷硬币猜正反面的赌博

coin money,vi. 暴富；获暴利

current coin,◎通货(指铸币)

coin purse,装硬币的钱包；钱包；零钱袋

commemorative coin,纪念币

真题例句...Every coin has two sides...第一套CET62015.12写作题