“The market was established to facilitate the exchange of goods and services.”

“The exchange of my old cellphone to a newer model will happen within the next week.”

“The free and open exchange of ideas and information has long been a tradition of science.”

“Water is fed from a small onboard tank through a heat exchanger, where it picks up waste heat on its way into the steam generator.”

“At the top is a 50m high radiant heat exchanger to cope with cooling loads.”

“The ion exchanger is porous and allows for a solution to permeate through the material.”

“Owner Darren Smith is warned off for six months for laying his own horse on the exchanges.”

“Other aberrations, such as minutes, acentric rings, dicentrics and exchanges, were rarely seen.”

“Betting exchanges allow bettors to accept wagers from other bettors at odds that the involved parties determine.”