1. His addiction to drugs caused his family much grief.
    他吸毒成瘾，使得他的家人非常伤心。

1. addiction

1. 成瘾性：机体方面的因素有:性别年龄、遗传异常、病理情况、心理因素(安慰剂、placebo)以及机体对药物反应的变化:致敏反应(sensitization),快速耐受性(tachyphylaxis)、耐受性(tolerance)、习惯性(habituation)、成瘾性(addiction)、依赖性(dependence).

1. 毒瘾
    Addiction is the condition of taking harmful drugs and being unable to stop taking them.

addiction的反义词

    e.g. She helped him fight his drug addiction.
           她帮助他戒毒。
    e.g. ...long-term addiction to nicotine.
           对尼古丁成瘾已久

2. 着迷；嗜好
    An addiction to something is a very strong desire or need for it.

addiction的意思

    e.g. He needed money to feed his addiction to gambling...
           他需要钱来满足他的赌瘾。
    e.g. I discovered an addiction to housework which I had never felt before.
           我发现自己迷上了做家务，之前我从没有这种感觉。

1. (Roman law) a formal award by a magistrate of a thing or person to another person (as the award of a debtor to his creditor)
    a surrender to a master

    e.g. under Roman law addiction was the justification for slavery

2. an abnormally strong craving

3. being abnormally tolerant to and dependent on something that is psychologically or physically habit-forming (especially alcohol or narcotic drugs)

    Synonym: dependencedependancedependencyhabituation