胃食管返流疾病通常由于瓣膜的虚弱而使胃酸倒流至食管，主要的症状为胃灼热。
GERD is an ailment of the stomach and esophagus that occurs when stomach acid backs up into the esophagus due to a weak valve.
胃食管返流疾病通常由于瓣膜的虚弱而使胃酸倒流至食管，主要的症状为胃灼热。
GERD is an ailment of the stomach and esophagus that occurs when stomach acid backs up into the esophagus due to a weak valve.
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