A patient may also acquire a tolerance for a certain drug, which means the patient has to take ever larger doses to produce the desired effect.
患者还可能对某种药物产生耐受性，这意味着患者必须服用比以往更大的剂量才能产生预期的效果。
2
Tolerance may lead to habituation, in which the person becomes so dependent on the drug that he or she becomes addicted to it.
容忍可能导致习惯化，在这种情况下，人变得如此依赖毒品，以至于他或她对毒品上瘾。
3
Dominique Monnet, at the European Centre for Disease Prevention and Control, an EU agency, sees a link between drug use and a population’s tolerance of uncertainty.