noun ダウンロード 🔗共有 悪化, 劣化 The process of making or growing worse, or the state of having grown worse. Examples : "The deterioration of the student's grades was a concern for his parents. " 生徒の成績の悪化は、両親にとって心配事でした。 condition process negative toeic AIとチャット語彙ゲーム読解練習