► 成句
一線 [いっせん] [一線を退く] meaning: retire rank: 4
☆ 彼は政界の一線から退くことを表明した ⇨ He announced that he would step back from the forefront of the political world (☛ Not completely retire, but scale down the activity significantly)
► 名詞
一線 [いっせん] [一線を画する] [liter] meaning: different rank: 3
☆ 彼の提案は他とは一線を画している (いっせんをかくして) ⇨ His proposal is differentiated with one line, clearly different, from others (☛ Usually positive)
一線 [いっせん] [一線を超える] meaning: limit rank: 3
☆ 常識の一線を超えた行動 ⇨ An action that crossed the line of the common sense