the letters exchanged between people
the act of exchanging letters
"there was no agreement between theory and measurement"
"the results of two tests were in correspondence"
The correspondence of actions to the nature of the agent renders them natural.
出自： J. Butler
The correspondence of the punishment with the sin.
出自： E. B. Pusey
The gunsmith..pointed out the points of correspondence between the bullets.
出自： F. Smyth