necrotic tissue

例句：

1. 1. The patient's necrotic tissue was removed during surgery.
   病人的坏死组织在手术中被移除。
2. 2.The necrotic tissue had to be carefully removed to prevent infection.
   必须小心地移除坏死组织以防止感染。
3. 3.Necrotic tissue is a sign of poor blood circulation in the body.
   坏死组织是体内血液循环不良的标志。