He became an irreplaceable part of the right zone of the defense of his team.

It was an irreplaceable part of New York's cultural life.

She is, and always will be, an irreplaceable part of my soul.

He began as a dealer in "sundries," and soon found himself an irreplaceable part of all organizations for regional building.

Thus they became irreplaceable parts of the system.

"It's become a huge and irreplaceable part of our income."

If the boy were harmed in any way, he realized that an irreplaceable part of himself would be lost.

For the Rangers, he is, as well, the irreplaceable part of what has of late become their ever more indispensable line.

Bearsie, you are an irreplaceable part of our family who will always be remembered with love.

Polonium was then an irreplaceable part of the bomb.