对尼古丁成瘾已久用英语怎么说？

对尼古丁成瘾已久

...long-term addiction to nicotine.

addiction

n. 入迷，嗜好，上瘾，吸毒成瘾，癖好；

例句
...long-term addiction to nicotine.
对尼古丁成瘾已久

to

prep. 向，朝着，到，关于，属于；adv. 朝一个方向的，到某种状态，关闭；

例句
I suggest you leave it to an expert...
我建议你把它留给专家来解决。

nicotine

n. 尼古丁，[化]烟碱；

例句
Both nicotine and carbon monoxide inhaled with cigarette smoking have been incriminated as causative factors.
抽烟时吸入的尼古丁和一氧化碳都已经被标定为致病因素。