rock-firm的用法和樣例：
例句
用作形容詞 (adj.)
- No tempest is capable of shattering his firm determination.
任何驚濤駭浪都不能動搖他堅如磐石的決心。 - Travis Dupree had shown during qualifying that he would have the speed to compete for the win, however everyone knew that Ryan would be rock solid when the race is on the line.
特拉維斯杜普雷顯示在排位賽中，他本來的速度競爭的勝利，但是每個人都知道，瑞安將穩如磐石的比賽時，上線。 - But if a full-fledged America suffered a real defeat from a small communist half-country, how can the West hope to stand firm in the future?
但是如果羽翼豐滿的美國在共產黨控制著的半個越南承受了徹底的失敗，西方世界又如何寄望在未來屹立不倒？
