関連ワード:  leopard cannot change his spots    leopard cannot change his spots meaning    leopard cannot change his spots idiom meaning    leopard doesn t change his spots meaning    leopard can t change the spots    a leopard can't change his stripes    a leopard cannot change his spots after all    a leopard cannot change his spots idiom    a leopard cannot change his spots sentence    the leopard cannot change his spots proverb meaning