It’s similar to Pavlov’s dogs learning to salivate when the bell rang.
就像巴浦洛夫的狗，一听到铃响，就会分泌唾液。
It's one reason why many managers will salivate at a large, established company with growing profits but a shrinking stock price. If the stock keeps falling, they'll just buy more.
这是他们对股价不断走低，利润不断增长的公司股票情有独钟的原因之一，越跌越买。
Just as Pavlov's dogs learned to salivate at the sound of a bell, the activities we associate with food can become signals to eat.
正如巴甫洛夫的狗一听到铃就分泌唾液，人遇上和某些食品有关的活动就会想到吃。
A new study suggests that obese people have a different physiological response to food: they continue to salivate longer in response to a new taste than do people of normal weight.
一项新的研究表明，肥胖的人与正常体重的人对食物有不同的生理学反应，他们品尝新味道的食物分泌唾液的时间更长。
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