Finally, at the lower esophageal sphincter, the squamous epithelium joins the columnar gastric epithelium to form the gastroesophageal junction.

最后，在食管下括约肌处，食管鳞状上皮移行为胃柱状上皮，形成了胃-食管交界区。

Heartburn starts in an area called the gastroesophageal junction, where the LES resides.

胃灼热始于 LES 所在的称为胃食管交界处的区域。

Obesity can cause hernias that disrupt the anti-reflux barrier of the gastroesophageal junction that normally protects against heartburn.

肥胖会导致疝气，破坏通常防止胃灼热的胃食管连接处的抗反流屏障。