A government could guarantee a coin's purity by stamping their official seal on a lump of metal.
政府可以通过在一块金属上盖上官方印章来保证硬币的纯度。
单词 | stamp ... seal |
释义 |
stamp ... seal
原声例句
PBS趣味科普 A government could guarantee a coin's purity by stamping their official seal on a lump of metal. 政府可以通过在一块金属上盖上官方印章来保证硬币的纯度。 |
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