a.

1. 外科的；外科医生的
   Some people can have their vision restored by a surgical operation.

   有些人可以通过外科手术恢复视力。

2. 外科（手术）用的[B]
   surgical instruments

   手术器具

3. 外科手术引起的
4. （如外科手术般）精确的

adj.

1. relating to or used in surgery.
2. (of a special garment or appliance) worn to correct or relieve an injury, illness, or deformity.
3. denoting something done with great precision, especially a military attack from the air.