英语语法分析

Previous work hinted that people secrete a mystery molecule in their mouths that could inhibit NEP, so Rougeot and colleagues started isolating peptides from saliva.

早先的研究揭示了人口腔分泌的一种未知的分子可以抑制NEP，所以Rougeot和她的同事们开始从唾液中分离缩氨酸。