They is both in duplicate.

这两者都是一式两份。

They are both in duplicate.

这两者都是一式两份。

To fill in the receipt in duplicate

一式两份填这张收据

Please fill in the receipt in duplicate.

请一式两份填写这张收据.

This may result in duplicate values.

这可能会导致重复的值。

Print this goods order in duplicate.

把这个货物订单打印两份。

Please fill in the receipt in duplicate .

清一式两份签收这个收据。

Insurance Policy in duplicate endorsed in blank.

保险单一式两份,空白背书.

Special U. S. Customs invoice, in duplicate;

专门的美国海关发票2份；

The trip records had been kept in duplicate .

旅游记录已一式两份进行了保存。