1. The doctor used an esophagoscope to examine the patient's esophagus for any abnormalities.

医生使用食管镜检查患者的食管是否有异常情况。

2. The esophagoscope allows doctors to visualize the inside of the esophagus and perform procedures such as biopsies or the removal of foreign objects.

食管镜可以让医生看到食管内部并进行活检或取出异物等操作。