This is the 3423rd most frequent Korean word.
대해서만
"Only about" or "only regarding."
In this sentence, '대해서만' restricts the topic being talked about to solely environmental issues.
그는 환경 문제에 대해서만 이야기를 합니다.
He only talks about environmental issues.
Here, '대해서만' limits the scope of questions to exclusively the first section.
그 문서의 첫 번째 부분에 대해서만 질문할 수 있습니다.
You can only ask questions about the first section of the document.
In this context, '대해서만' emphasizes that the individual is solely assigned to this specific project.