складне завдання, виклик

Приклади використання слова «challenge»:

Tarzan felt theold, wild impulse to reply with the challenge of his kind.
If he took up that devil-may-care challenge he must fight it out alone.
Next instant he trumpeted, a furious, rattling challenge of rage and defiance.
Wolf Leroy was never a safe man to fling a challenge at.
Don Andres waved away the challenge which the question carried.