“recurrent theme”造句，怎麼用recurrent theme造句

Suspicion of a financial oligarchy is a recurrent theme in America.

Sixtus's violent, if productive, five-year papacy exemplified a recurrent theme in Rome's history: the entwining of brutality with lavish creativity.

By contrast, imbalances have been a recurrent theme of Barack Obama's.

Heraldry has been a recurrent theme, the Black, White, Red and Golden Lions have formed part of the royal coat of arms since the time of the Norman Conquest.