He's only 24 years old and a drug addict.

他只有24岁，可已经是一个瘾君子。

The self-confessed drug addict was arrested 13 months ago.

那个招认自己是瘾君子的人13个月前被抓起来了。

Dr. Townsend was a drug addict.

汤森特医生是个嗜药成癖的瘾君子。

I used to be a drug addict.

我曾经是个瘾君子。