He has failed a dope test for cocaine...是什么意思？

He has failed a dope test for cocaine...

他未能通过可卡因药检。

he

pron. 他，它，一个人；n. 雄性动物；

例句
Logic had prevailed and he had abandoned the idea.
最终理智占了上风，他打消了那个念头。

has

v. 有( have的第三人称单数 )，（亲属关系中）接受，拿，买到；

例句
...the operation a patient has had.
病人做过的手术

failed

adj. 失败了的，不成功的；v. 在…中失败( fail的过去式和过去分词 )，衰退，衰弱，破产；

例句
They recently failed to negotiate a mutually acceptable new contract.
他们最近未能谈成一个双方都满意的新合同。

dope

n. 麻醉剂，笨蛋，内幕消息，兴奋剂；vt. 给…服麻醉剂，使昏昏沉沉，给…用兴奋剂，在…中加入麻醉剂；

例句
He has failed a dope test for cocaine...
他未能通过可卡因药检。

test

n. 试验，考验，测验，化

例句
Car manufacturers are already producing small numbers of electric vehicles to test customer acceptance...
汽车制造商们已经开始生产少量的电动车辆以测试顾客的接受程度。

for

prep. 为，为了，倾向于，关于，当作；conj. 因为，由于；

例句
I've come looking for a bit of advice.
我特来讨教。

cocaine

n. <药>可卡因，古柯碱；

例句
...a newspaper that has crusaded against the country's cocaine traffickers.
坚决抨击该国可卡因毒贩的报纸