最前線

(1)the line along which opposing armies face each other

(2)敵どうしがお互いに差し迫っている線

(3)the position of greatest importance or advancement; the leading position in any movement or field; "the Cotswolds were once at the forefront of woollen manufacturing in England"; "the idea of motion was always to the forefront of his mind and central to his philosophy"

(4)最も大きな重要性または進歩の状況

(5)あらゆる運動または分野での指導的地位

(6)an undeveloped field of study; a topic inviting research and development; "he worked at the frontier of brain science"

(7)未開発の研究分野

(8)研究開発をしたくなる話題

(9)the part in the front or nearest the viewer; "he was in the forefront"; "he was at the head of the column"

(10)正面または視聴者と最も近い場所

(1)