服药成瘾者

例句：

1. 1.She was an addict to coffee and couldn't stop drinking it.
   她对咖啡上瘾，无法停止饮用。
2. 2. The drug addiction is a major public health concern.
   药物成瘾是一个重要的公共卫生问题。
3. 3. He became an addict to gambling and lost everything he owned.
   他成了赌博的瘾君子，失去了所有的财产。