肠胃病的英文：
intestinal tract disease

Food pass from the stomach to the small intestine and from there to the large intestine.
食物由胃进入小肠再进入大肠。

Inflammation of the mucous membrane of the stomach and intestines.
胃肠炎胃粘膜和肠的炎症

The small intestine is a long, tubular organ.
小肠是长管形器官。