oesophageal bulb

例句：

1. 1. This condition is characterized by the presence of an oesophageal bulb.
   这种状况的特点是存在一个食管球状膨大部。
2. 2.The oesophageal bulb is a critical part of the digestive system.
   食管球状膨大部位于消化系统的关键环节。
3. 3.The oesophageal bulb is responsible for the movement of food through the esophagus.
   食管球状膨大部位于食物通过食管的移动过程中。