He will be a cog in a vast machine.
He felt as if he were trapped within some vast machine.
Something exploded inside and the vast machine heaved itself into the air.
It doesn't require the sort of vast machines that you need for atom-smashing.
All too soon his own vast machine glided in for a landing.
The very existence of this vast, ancient machine marked a new reality for humans.
The vast single machine, the sum of many parts that was the caravan, needed constant care.
The vast machines turn out their parts steadily and inexorably.
The whole house, horrendous in its silence, was like a vast infernal machine.
Its vast machines are loyal to it and must follow its orders exactly.