unattended operation

例句：

1. 1. The surgeon performed the unattended operation on the patient in the operating room.
   外科医生在手术室里对病人进行了无人操作的手术。
2. 2.The unattended operation was a success, but it required extra care to ensure patient safety.
   无人操作的手术成功了，但需要额外的小心来确保患者的安全。
3. 3. Due to the complexity of the surgery, the unattended operation could not be completed within the scheduled time.
   由于手术的复杂性，无法在预定的时间内完成无人操作的手术。