他们也可能开始时需要在一段时间反复重复这种活动才能感觉它的效果，如果他们无法继续，就会出现戒毒那样身体上和心理上的综合反应。

They may also begin to need to do more and more of the activity over time to feel the effects, and experience physical and psychological withdrawal symptoms if they can't do it.

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目的：探讨负性情绪下强制戒毒人员和正常人群在自主神经反应及情绪的认识与表达上是否存在差别。

Objective: to investigate the differences of autonomic nervous response and expression of negative emotions between drug addicts under compulsory rehabilitation and ordinary persons.

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