唾液在口腔和喉咙，自然中和胃酸。
Saliva in the mouth and throat naturally neutralizes stomach acid.
氧化钙较碳酸钙能中和胃酸。
Calcium oxide can neutralize peptic acid better than calcium carbonate.
嚼一两片口香糖可能会使胃液回流入胃并使口腔分泌碱性唾液冲刷食道，中和胃酸，缓解由胃酸引起的“烧灼感”。
Chewing on a piece or two of gum, it seems, helps force fluids back into the stomach and flood the esophagus with alkaline saliva, neutralizing acids that cause the characteristic burning sensations.
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