noun ダウンロード 🔗共有 日和見主義者 Someone who takes advantage of any opportunity to advance their own situation, placing expediency above principle. Examples : "The opportunist in the class always took credit for others' work if it benefited their grade. " クラスの日和見主義者は、自分の成績に有利になるなら、常に他人の仕事を自分のものにした。 character person attitude moral business AIとチャット語彙ゲーム読解練習