他是个模范的专业人士，是年轻人的榜样。He is a model professional and an example to the younger lads.上司们形容他是个模范官员。He was described by his seniors as a model officer.她是全班的模范.She was an example to the rest of the class....
The mayor laid the cornerstone of the new library.市长为新图书馆奠基.The doctrine of surplus value is the cornerstone of Marx's economic theory.剩余价值学说是马克思经济理论的基石.The founders of our religion made this a cornerstone of morali...