1.   Researchers are experimenting by Augmenting the system with fiber-optic sensors and polymer composites.

2.   After a couple of years of having nature laugh at us we switched to in vitro methods to augment faulty systems.

3.   He said the artificial intelligence filtering system is being augmented by focus groups of parents across the country in deciding what Internet sites to block.

4.   The bus and library systems also were augmented, she added.