external examination

例句：

1. 1. Before the surgery, an external examination is required to ensure the patient's health.
   手术前需要进行外部检查以确保患者的健康。
2. 2.The doctor performed an external examination on the patient before giving him medication.
   医生在给病人开药之前，先对病人进行了外部检查。
3. 3. During the examination, the dentist carefully checked the teeth and gums for any signs of decay or infection.
   在检查过程中，牙医仔细检查了牙齿和牙龈，寻找任何蛀牙或感染的迹象。