thin split thickness free skin graft

例句：

1. 1. The thinsplit thickness free skin graft is acrucial step in the treatment of burns.
   薄层分离、厚度自由皮肤移植是治疗烧伤过程中至关重要的一步。
2. 2. The surgeonused a thin split thickness free skin graft to repair the wound.
   外科医生使用薄层分离、厚度自由皮肤移植来修复伤口。
3. 3. The patient's condition improvedsignificantly after undergoing a thin split thicknessfree skin graft.
   经过薄层分离、厚度自由皮肤移植后，患者的病情显著改善。