Translation of "mtupo" into English

Malaika mmoja anajibu swali hilo: “Hivi ndivyo Babiloni lile jiji kubwa litakavyotupwa chini kwa mtupo wa kasi sana, naye hatapatikana tena.”

An angel answers that question: “With a swift pitch will Babylon the great city be hurled down, and she will never be found again.”