This is the 6846th most frequent Korean word.
일대를
"일대를" means "the whole area" or "the entire region."
In this sentence, 일대 refers to 'the whole area' or 'entire region,' encompassing a larger scale of a specified location.
일대에서는 새로운 공원이 조성될 계획이다.
A new park is planned to be established in the entire area.
Here, 일대 is used to denote 'vicinity' or 'area near,' referring to places around Seoul.
서울 일대에 눈이 많이 내렸다.
Heavy snow has fallen in the vicinity of Seoul.
Here, 일대를 means 'the area around' or 'nearby area,' indicating the surrounding region of a specific location.