This is the 6863rd most frequent Korean word.
일환
"일환" means "a part or link in a chain; a component of a larger whole."
The word '일환' here is used to signify that the project is one component or part of a broader initiative aimed at protecting the environment.
이 프로젝트는 환경 보호를 위한 일환으로 시작되었습니다.
This project was initiated as part of efforts to protect the environment.
In this sentence, '일환' denotes that the introduction of a new learning method is part of the larger context of educational reforms.
교육 개혁의 일환으로 새로운 학습법이 도입되었습니다.
As part of education reforms, a new learning method has been introduced.
Here '일환' is used to indicate that the urban reconstruction plan is one element of a broader policy framework.