返流是第二种最常见的症状，并有大约60％的患者存在。

Regurgitation is the second most common symptom, and is present in about 60% of patients.

youdao

返流是第二种最常见的症状，并有大约60％的患者存在。

Regurgitation is the second most common symptom, and is present in about 60% of patients.

youdao