Adjective:

1. consisting of or having the hardness of adamant

2. having the hardness of a diamond

3. impervious to pleas, persuasion, requests, reason;

   "he is adamant in his refusal to change his mind"
   "Cynthia was inexorable; she would have none of him"
   "an intransigent conservative opposed to every liberal tendency"
   

stonyadj.石头的；多石的；铁石心肠的；<古>石造的

ironn.熨斗；铁；刚强(复）irons: 镣铐.v.熨；烫adj.铁的；刚强的

adamantadj.坚定不移的；固执的n.坚硬无比之物；硬石

intransigentadj.不妥协性的n.不妥协的人

inexorableadj.无情的；不可阻挡的；坚决不变的n.坚定不移的人

1. It is adamantine for Chinese to safeguard homeland integrity.
   中国人民捍卫祖国领土完整的决心和意志是坚定不移的。