a crusading zeal to eradicate drug abuse是什么意思？

a crusading zeal to eradicate drug abuse

彻底打击滥用药物的激情

crusading

v. 加入十字军，从事改革运动( crusade的现在分词 )；

例句
...an adopted boy whose cause is taken up by a crusading lawyer.
由一位执著坚定的律师受理其诉讼案件的被收养男孩

zeal

n. 热心，热情，奋发；

例句
His reforming zeal was boundless.
他对于改革热情无限。

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。

eradicate

vt. 摧毁，完全根除；n. 根除者，褪色灵；

例句
They are already battling to eradicate illnesses such as malaria and tetanus...
他们已经在努力消灭疟疾、破伤风等疾病。

drug

n. 药物，药剂，麻醉药，毒品；vt. （在食物或饮料中）投放麻醉药，下麻醉药，掺麻醉药于，使服麻醉药，使服毒品；vi. 使服麻醉药，用药麻醉，使服兴奋剂；

例句
Naylor acknowledged, in a letter to the judge, that he was a drug addict...
内勒在给法官的信中承认自己吸毒。

abuse

n. 滥用，恶习，侮辱，恶言；vt. 滥用，虐待，辱骂；

例句
I was left shouting abuse as the car sped off...
汽车飞驰而去，留下我在那里大声咒骂。