When active, these monstrous machines could be extremely dangerous.

They are like a monstrous machine moving along its own path.

But his son - their son - had been murdered by the monstrous machines.

But his son-their son-had been murdered by the monstrous machines.

The Mayor's attention is diverted by the roar of a monstrous machine on the beach.

Shear-jashub seemed to have no fear of the monstrous machine, and neither did his donkey.

He had no difficulty in sticking his monstrous machine into her love-nest.

In the centre of the room was a monstrous machine, black and towering; its huge bulk awesome with power.

Farther beyond, I saw monstrous machines that dwarfed even those in the engine rooms of the new superbattleships.

Twenty minutes later a monstrous machine with ungainly flapping wings came heavily over the swamp.