heterologous graft

例句：

1. 1. The surgeon performed a heterologous graft on the patient's leg to repair the damaged tissue.
   外科医生在病人的腿上进行了异种移植，以修复受损的组织。
2. 2.Heterologous grafts are often used in bone surgery to replace damaged bone tissue.
   异种移植物常用于骨手术中，以替换受损的骨组织。
3. 3. Due to the limited availability of human donor organs, heterologous grafts are often necessary for critically ill patients.
   由于人类供体器官的有限可用性，对于危重患者来说，异种移植物往往是必要的。