noun 下载 🔗分享 美钞, 绿背, 绿钞 Any bill that is legal tender in the US (originally printed with green and black ink) issued by the Federal Reserve. Examples : "He saved up his allowance, hoping to have enough greenbacks to buy the new video game. " 他攒着零花钱，希望能攒够美钞买下那个新游戏。 economy finance government 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 美金，美元。 The United States dollar. Examples : "I need to save my greenbacks to buy a new bicycle. " 我得攒点美金买辆新自行车。 economy finance 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 纸币，美钞。 A unit of American currency issued during the Civil War by the Treasury Department. Examples : "During the Civil War, soldiers were often paid in greenbacks, which helped fund the Union army. " 在美国内战期间，士兵们经常用绿钞（当时财政部发行的纸币，也叫美钞）支付军饷，这有助于为联邦军队提供资金。 government history economy finance business war nation 与AI对话词汇游戏阅读练习
