You need a complex mechanism, known as an engine, to transform random energy into the kinetic energy that is useful for work.
(You; need; a complex mechanism, known as an engine, to transform random energy into the kinetic energy) (a complex mechanism, known as an engine; to transform; random energy; into the kinetic energy) (the kinetic energy; is; useful for work)
You a complex mechanism, known as an engine the kinetic energy
need to transform is
a complex mechanism, known as an engine, to transform random energy into the kinetic energy
random energy into the kinetic energy
useful for work