Saliva



GRE TOEFL

解释

GRE 红宝书

• n. 唾液, 口水

Webster Collegiate

noun

• Etymology: Latin
• Date: 15th century
• a slightly alkaline secretion of water, mucin, protein, salts, and often a starch-splitting enzyme (as ptyalin) that is secreted into the mouth by salivary glands, lubricates ingested food, and often begins the breakdown of starches

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