Meanings of known powers in English

His achievement of business was immense, and enlarges the known powers of man.

Here lies, moreover, the real explanation of the Italians' well- known powers of endurance when faced with the cataclysms of nature.

Virgo submitted evidence on relatively little- known powers that could be used against directors and senior managers accused of mis-management of banks and other financial institutions.

He had never known Powers to fuck up like that, and it made him wonder.