内窥镜——一种柔软的器具，包括光导纤维束和光源，内科医师用来检查食道，胃，和十二指肠。

ENDOSCOPE - a flexible instrument containing fiberoptic bundles and a light source used by physicians to examine the esophagus, stomach, and duodenum.

youdao

内窥镜——一种柔软的器具，包括光导纤维束和光源，内科医师用来检查食道，胃，和十二指肠。

ENDOSCOPE - a flexible instrument containing fiberoptic bundles and a light source used by physicians to examine the esophagus, stomach, and duodenum.

youdao