Be Fully Confident Of坚信
be quite confident of对
be confident of sth对某物自信;确信
be confident of oneself充满自信
be confident of success确信能够成功;对成功有信心
Be confident of yourself对自己有信心;相信你自己;是确信你自己
be confident of doing sth有信心做某事
Be Confident Of Succeeding In稳操左券