谓拯救国家于困难之时的才能a person endowed with the talent to govern a country in times of trouble

• 辛亥革命后，许多留学生怀有济世之才，慨然回国效力。

  After the 1911 Revolution, many students wanted to lead their country through times of trouble and generously returned to serve their country.

• 他身怀济世之才，却终身无用武之地。

  He was full of potential to govern or serve his country, but he never found a position to employ that talent throughout his lifetime.