而唾液正像一道保护牙齿的屏障，把橘子等酸性食物以及细菌分解食物产生的酸性物质中和掉。
Saliva acts as a barrier, protecting the teeth by neutralising acidic foods such as oranges, and the acid produced by bacteria as they break down foods.
圣欧诺弗海滩位于阳光普照的橘子郡圣欧诺弗州立公园南端延伸线上，长两英里；这片孤僻的海滩受到名为“圣欧诺弗之友”的组织保护。
Yet another enclave defended by an active “Friends of” organization is the two-mile stretch of beach at the southern end of San Onofre State Park in the sun-drenched OC.
圣欧诺弗海滩位于阳光普照的橘子郡圣欧诺弗州立公园南端延伸线上，长两英里；这片孤僻的海滩受到名为“圣欧诺弗之友”的组织保护。
Yet another enclave defended by an active “Friends of” organization is the two-mile stretch of beach at the southern end of San Onofre State Park in the sun-drenched OC.
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