◎ 百炼成钢 bǎiliàn-chénggāng[expertise is the result of long and hard practice] 铁经过上百次锤炼才成为钢.比喻将人锻炼成钢铁一般坚强◎ 发愤图强 下定决心,努力谋求强盛或进步.也指下定决心力求上进的情...