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唾液在口腔和喉咙，自然中和胃酸。
Saliva in the mouth and throat naturally neutralizes stomach acid.
youdao
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唾液是碱性的，对胃酸有中和作用。
Saliva is alkaline and could have a buffering effect on stomach acid.
youdao
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唾液是碱性的，对胃酸有中和作用。
Saliva is alkaline and could have a buffering effect on stomach acid.
youdao