crossed twinning

例句：

1. 1. The twins were born with a rare genetic condition that caused them to cross twinning.
   双胞胎出生时患有一种罕见的遗传病，导致他们出现交叉孪生现象。
2. 2. The research team discovered a new method for treating cross-twinned tumors.
   研究小组发现了一种新的治疗交叉孪生肿瘤的方法。
3. 3. The doctors explained the process of cross-twinned organ transplantation in detail.
   医生们详细解释了交叉孪生器官移植的过程。