duplex purchase

例句：

1. 1. We decided to buy the house in a duplex purchase.
   我们决定以双重购买的方式购买那所房子。
2. 2. The company offered a special discount for those who bought in a duplex purchase.
   该公司为那些以双重购买方式购买的人提供了特别折扣。
3. 3.They made a deal to buy the land in a duplex purchase.
   他们达成了一项协议，以双重购买的方式购买那块土地。