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1·Mrs Washington was featured alone on the face of the $1 silver certificate in 1886.

华盛顿夫人的头像单独出现在1886年发行的1元银元券上。

2·He talked about the gold standard that America was on, and that each dollar bill was actually a silver certificate.

他说到美国正处于金本位制，每一张美钞实际就是一枚金属货币。

3·Silver products are in the area of preferential trade agreements, please confirm whether the Certificate of Origin is passed.

银浆属于优惠贸易协定商品范畴，请确认是否符合协定规定原产地、证书是否通过？