They may have a physical or emotional dependence on something.

他们可能对某些东西在身体上或情感上有依赖感。

Only a few kinds of drugs can cause physical dependence.

只有几种毒品会导致身体上的依赖。

In this way, opioids, if not used very carefully and intentionally, can create physical dependence.

这样，阿片类药物如果不非常谨慎和有意地使用，就会产生身体依赖性。

Caffeine can cause some physical dependence but going cold turkey isn't gonna give you anything like the withdrawal symptoms of nicotine or cocaine.

咖啡因会导致一些身体依赖性，但戒烟不会给你带来任何类似于尼古丁或可卡因的戒断症状。

Unfortunately, these dopamine levels can take a long time to naturally replenish, contributing to physical and psychological dependence or addiction, as well as increased irritability, restlessness and paranoia.

不幸的是，这些多巴胺水平可能需要很长时间才能自然补充，导致身体和心理依赖或成瘾，更加易怒、烦躁和偏执。

Addiction can refer to a physical dependence, a physiological need for a drug, that reveals itself through terrible withdrawal symptoms if the use stops or reduces.

成瘾可以指身体依赖，对药物的生理需求，如果停止或减少使用，它会通过可怕的戒断症状显现出来。

To experience the same release of dopamine and resulting mood effects as before, people have to take larger and larger doses— a cycle that leads to physical dependence and addiction.

要想体验与以往等同的多巴胺分泌和相应的情绪作用，人们就必须服用越来越大的剂量，而这一循环会导致身体产生药物依赖性和成瘾。