The raiders are simple machines.

Simple machines, which are women-friendly, should be invented to enhance their roles in the work place.

This is a simple machine. All right, this is your gas, your brake. I want you to put your foot on that pedal down there.

Turing proposed that all computations and logicaloperations could be performed by a simple machine, which he calledthe Universal Turing Machine, reading and modifying a linearsequence of symbols.

Instead, most conflicts around the world have been fuelled by simple pistols, rifles and machine guns.