集中し続ける
集中力
集中力を維持し
やる気を起こさせる
distraction
集中 PC
集中PC
一生懸命働き
集中し続け
匿名の引用: 「気晴らしを減らし
引用に集中する
集中力を高めます。」
フォーカス
集中力を維持
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