hard-headed hammer硬头榔头
hard-headed advice冷静的意见
hard-headed shrewd and unsentimental头脑冷静的
ADJ（形容词） You use hardheaded to describe someone who is practical and determined to get what they want or need, and who does not allow emotions to affect their actions. 脚踏实地的; 不感情用事的
...a hardheaded and shrewd businesswoman.
...一位务实、精明的女商人。