Substance-abusing writers are just substance abusers—common garden-variety drunks and druggies, in other words.

酗酒和滥用药物的作家只是些瘾君子而已——换句话说跟其他的瘾君子毫无二致。

Hi. Before coming to these meetings, I never realized how messy substance abusers can be.

你好。来参加会议之前，我还真不知道酗酒者这么邋遢呢。

Whereas some of the low-self-control study members are more likely to be single parents with a very low income and the parent is in poor health and likely to be a heavy substance abuser.

W：而一些自控力低的研究成员更可能是收入很低的单亲父母，而且父母身体状况不佳， 很可能是严重的药物滥用者。