更生者,更新者,改革者
Regenerator \Re*gen"er*a`tor\ (-?`t?r), n.
1. One who, or that which, regenerates.
2. (Mech.) A device used in connection with hot-air engines,
gas-burning furnaces, etc., in which the incoming air or
gas is heated by being brought into contact with masses of
iron, brick, etc., which have been previously heated by
the outgoing, or escaping, hot air or gas.