“下段”用英语怎么说？

她给了莫莉一些吃的：一根鸡腿下段和一些奶酪。She offered Molly tidbits: a chicken drumstick, some cheese.食管下段可见黄褐色的斑块, 同时黏膜充血.Tan - yellow plaques are seen in the lower esophagus, along with mucosal hyperemia.胸部计算机断层扫描及软式支气管镜检发现在气管下段有多姿性肿瘤.Che...

“下段”的拼音为：xià duàn...