ether anesthesia apparatus

例句：

1. 1. 空气；2.醚；3.
   麻醉
2. 4.
   麻醉
3. 1. The patient needs to breathe pure oxygen for the operation.
   病人需要呼吸纯氧进行手术。
4. 2.The anesthesia apparatus was carefully checked before the surgery began.
   手术开始前，麻醉设备被仔细检查。
5. 3. The anesthesiologist administered a local anesthetic to numb the area.
   麻醉师给该区域注射了局部麻醉药以麻木。