条件反射一经形成，虽然可以一次又一次地压制下去，但是它总会重新再现，真是摆也摆不脱扔也扔不掉。 The conditioned response, once it is firmly established, can be extinguished dozens of times, but it sill always return, like the proverbial bad penny.
调节好的表现出或训练出具有某种条件反射的 Exhibiting or trained to exhibit a conditioned response.
反应减弱因不断接受条件刺激而伴随产生的条件反射减弱 The decline of a conditioned response following repeated exposure to the conditioned stimulus.
巴甫洛夫，伊凡·彼得洛维奇1849－1936俄国生理学家，因发现条件反射而著名，他1904年因在研究消化作用的特征方面的贡献而获诺贝尔奖 Russian physiologist who is best known for discovering the conditioned response. He won a1904 Nobel Prize for research on the nature of digestion.
