n.要塞，堡垒

原形：fastness复数：fastnesses

The fastness of the glue ensures that the model parts stay securely attached.
这种胶水的牢固性确保了模型部件安全地粘合在一起。
The castle's fastness, built on a high cliff, made it nearly impregnable.
建在悬崖之上的城堡固若金汤，几乎无法攻克。
The fabric's colorfastness to washing is excellent; it doesn't fade after multiple washes.
这种布料的耐洗色牢度极好，多次洗涤后颜色也不褪色。
The mountain's fastness provided a natural refuge for the rebels during the war.
战争期间，山区的险峻为叛军提供了一个天然的避难所。
The new password encryption algorithm guarantees the fastness of users' data security.
新的密码加密算法确保了用户数据安全的强度。
The ship's anchor held fastness in the stormy sea, keeping us steady amidst the chaos.
船锚在狂风暴雨中牢牢抓住海底，使我们在混乱中保持稳定。
The paint's adhesion fastness to the metal surface is crucial for preventing rust.
油漆对金属表面的附着力强弱对于防止生锈至关重要。
Her determination and mental fastness helped her overcome the toughest challenges in her career.
她的决心和精神坚韧帮助她克服了职业生涯中最大的挑战。
The historical fortress, known for its defensive fastness, still stands as a testament to ancient engineering.
那座以防御坚固著称的历史堡垒至今仍屹立不倒，是古代工程技艺的见证。
The shoe manufacturer boasts about the abrasion fastness of their soles, promising longevity with every step.
鞋子制造商夸耀其鞋底的耐磨性，承诺每一步都经久耐用。