Two-fold

The two-fold race Anchises understands, / the double sires, and owns himself misled / by modern error 'twixt two ancient lands.

Analysts say in a democracy, and more specifically in the United States, the role of the press is two-fold: to inform the public and, more importantly, to act as a watchdog on government activities.

The suddenness with which the solemn quiet had been broken in upon, had chaced from his remembrance the horrid phantom;—it now recurred to it, with two-fold force, and a shudder crept all over him.