digestive tract
noun [ C usually singular ] medical specialized uk/daɪˈdʒes.tɪv ˌtrækt/ us/daɪˈdʒes.tɪv ˌtrækt/
消化道（从口腔开始，经由胃肠，直到肛门的食物通道）
the tube-like passage from the mouth, through the stomach and to the anus, through which food travels during digestion
Compare: alimentary canal