In or near the area occupied by; in or near the location of.
예문
1. at 40 miles an hour (시속 40마일로) 2. School begins at nine and ends at four. (학교는 9시에 시작하여 4시에 끝난다) 3. We met at the library. (우리는 도서관에서 만났다) 4. Open your book at page 30. (책의 30페이지를 펴시오)) 5. the nations at war (교전국)
