n.(名词)

1. [U]古柯碱a drug, formerly used for preventing pain in medical operations and now often taken illegally for pleasure, which one can become dependent on

cocainn.古柯碱；可卡因=cocaine.

1. He was addicted to cocaine.
   他吸可卡因上瘾。
2. Cocaine is a highly addictive drug.
   可卡因是一种极为容易上瘾的毒品。