形容詞 rock-ribbed:

1. abounding in or bordered by rocky cliffs or scarps
   同義詞：rockbound
2. tradition-bound and obstinately opinionated
   同義詞：die-hard

rock-ribbed

adj.（形容詞）
Having rocks or rock outcroppings; rocky.
有巖石或有巖石露出地表的；多巖石的
Firm and unyielding, especially with regard to one`s principles, loyalties, or beliefs:
堅定的：尤指在原則、忠誠或信仰方面堅定不移和百折不撓的：
例句：
a rock-ribbed conservative.
死硬的保守主義分子