複数辞典一括検索+

・retire [go (back), crawl, withdraw] into one's shell 打ち解けない, 殻に閉じこもる.🔗🔉

・retire [go (back), crawl, withdraw] into one's shell 打ち解けない, 殻に閉じこもる.

研究社新英和大辞典 ページ 221661 でのback単語。