extol
v
(-ll-) [Tn, Tn.pr, Cn.n/a]
~sb (as sth) (fml 文) praise (sb/sth) highly 赞颂, 颂扬(某人[某事物])
extol the merits of small businesses 赞扬小企业的优点
extol sb's virtues to the skies, ie greatly 把某人的美德捧上天
extol sb as a hero 把某人当作英雄来歌颂.
Some of the bigger firms are engaged in researches which are of such general and fundamental nature that it is a positive advantage to them not to keep them secret.