illegal drugs such as heroin and cocaine 海洛因和可卡因之类的毒品

I was charged with illegal possession of firearms. 我被指控非法持有火器。

it is illegal (for sb) to do sth It’ s illegal to buy cigarettes in Britain if you’ re under 16. 在英国，不满16岁购买香烟是违法的。

It is illegal for employers to discriminate on the grounds of race. 雇主对种族的歧视是违法的。