digestive tract

名词 digestive tract:

1. tubular passage of mucous membrane and muscle extending about 8.3 meters from mouth to anus; functions in digestion and elimination
   同义词：alimentary canal, alimentary tract, digestive tube, gastrointestinal tract, GI tract

1. The excretory opening of the digestive tract in animals such as birds, reptiles, amphibians, and fish.
   肛门鸟、爬行动物、两栖动物以及鱼等动物的消化道的排泄口