be drawn up in triplicate

• 写成一式三份

be drawn up in triplicate的用法和样例：

例句

1. The Proforma Invoice in triplicate enclosed does not imply acceptance of your order as both price and quantity stated therein are without engagement.
   所附形式发票一式三份并不意味我们接受贵方订单，因为所列价格与数量是不受约束的。