gastrofiberscope

例句：

1. 1.The gastrofiberscope was used to examine the patient's stomach lining.
   胃纤维镜被用来检查患者的胃壁。
2. 2. The gastrofiberscope revealed that the patient had a small tumor in the esophagus.
   胃纤维镜显示患者食管有一小肿瘤。
3. 3.During the procedure, the doctor inserted the gastrofiberscope through the patient's mouth.
   在手术过程中，医生通过患者的嘴巴插入了胃纤维镜。