gold certificate

例句：

1. 1. The bank issued a goldcertificate to the customer for depositing money.
   银行向客户发放了黄金证明书，以便存款。
2. 2. The gold certificate was usedas a form of currency during the colonial period.
   在殖民时期，黄金证书作为货币使用。
3. 3. Thegold certificate issuanceis a crucial step in theprocess of converting raw materials intofinished products.
   黄金证书的发行是将原材料转化为成品过程中的关键步骤。