blood transfusion

例句：

1. 1. He received ablood transfusion after his surgery.
   他在手术后接受了输血。
2. 2. The doctor said that the patientneeded a blood transfusion immediately.
   医生说病人需要立即进行输血。
3. 3. Blood transfusionsare essential for saving lives in emergencies.
   在紧急情况下，输血对于挽救生命至关重要。