She smiles at her secretary; she never reciprocates a greeting or farewell verbally except with clients.
She reciprocates in the only way she knows how.
The second is to see if she reciprocates and shares information about herself that was a little uncomfortable.
These figures illustrate the various angles made by the wing with the horizon as it hastens to and fro, and show how the wing reverses and reciprocates, and how it twists upon itself in opposite directions, and describes a figure-of-8 track in space.
The way in which the natural wing rises and falls on the air, and reciprocates with the body of the flying creature, has a very obvious bearing upon artificial flight.
