This is the 16161st most frequent Korean word.
불법판매를
"Illegal selling."
In this sentence, '불법판매를' is used as a grammatical object marked by the object marker '를', relating to illicit sales that the subject ('그' - he) is involved in.
그는 불법판매를 통해 큰 돈을 벌었다.
He made a lot of money through illegal sales.
Here, '불법판매를' is an object denoting the unlawful selling activity being examined by the police, emphasizing the investigation's focus.
경찰은 그 불법판매를 조사하고 있습니다.
The police are investigating that illegal sale.
In this case, '불법판매를' is the action being prevented, underlined by entities striving to inhibit such unethical transactions.