You've got used to them-and they're at least as addictive as nicotine or crack cocaine.

你已经习惯他们了——就像对尼古丁或可卡因上瘾一样。

Although dopamine is often associated with the experience of pleasure-it represents "rewards," such as chocolate cake or crack cocaine-it also helps make us want stuff.

虽然多巴胺经常与愉悦感的体验——表现为“奖赏”，如巧克力蛋糕或者快克可卡因——联系在一起，但它也会使我们充满渴望。

After all, they managed to cut crime when several trends, from the growing availability of crack cocaine to the continued breakdown of poor families, were against them.

毕竟，他们成功减少了犯罪，而与此同时，其他几种趋势，从可卡因越来越容易取得，到贫困家庭持续崩溃，却在持续上升。

Shortly afterwards, her father said in an interview that she was suffering from emphysema and had been warned by doctors that she would die if she continued smoking crack cocaine and cigarettes.

没过多久她的父亲在一次采访中提到她已患有肺气肿，医生已经警告她如果继续吸食可卡因和烟会有死亡的可能。

Crack is a highly potent and addictive derivative of cocaine.

强效纯可卡因是一种药效极强、容易使人上瘾的可卡因制剂。