首先,它是美国的雕刻与印刷局的新一代100美元的钞票生产过程中,在华盛顿,周三直流,这是美国铸币局在这里,看看硬币的。
First it was the U. S. Bureau of Engraving and Printing's next-generation $100 bill production process, in Washington, D. C. On Wednesday, it was the U. S. Mint here, to see how coins are made.
youdao