1. 形容詞
   鐵石心腸的
   

   同義字詞
   callous,case-hardened,cold-blooded,compassionless,desensitized,hard,hard-boiled,hard-hearted,heartless,indurate,inhuman,inhumane,insensate,insensitive,merciless,obdurate,pitiless,remorseless,ruthless,soulless,stony,stoney,take-no-prisoners,thick-skinned,uncharitable,unfeeling,unmerciful,unsparing,unsympathetic
   

例句

1. Galneryus ' latest album, the verbosely titled The Ironhearted Flag Vol.
2. Upon this occasion Gen. Seymour took occasion to publicly compliment the 115th, giving it the honor and praise of saving his little army from total annihilation, and naming it the " Ironhearted Regiment.