What I have is a mechanical substitute that pumps blood though a broken body.

First, they were separated from their mothers for six to twelve hours after birth and placed with a human made mechanical substitute in which they called the "surrogate mother."

Howard plans to palm off a mechanical substitute for the real thing?

We are, therefore, keeping a close watch upon the joint effort of Guild and Ix to develop a mechanical substitute for the Navigators' predictive talents.

Eventually, the living body of a Grigari amalgam was completely discarded, replaced with an inexact, mechanical substitute.

The eyes are destroyed, and mechanical substitutes are not satisfactory for the waking life.

He seemed a galvanizing apparatus, too, charged with a grim mechanical substitute for the tender young imaginations that were to be stormed away.

It was merely a mechanical substitute for self-consciousness.

Still working on hearts and lungs, have to use mechanical substitutes.

Racism is likened to a poison which children take in, if not from their mother's breast, then at least from its mechanical substitutes.