noun🔗Share요새, 성채A secure or fortified place; a stronghold, a fortress."The castle served as the king's fastness during the long siege. "그 성은 긴 포위 공격 동안 왕의 요새 역할을 했다.militaryarchitecturebuildingChat with AIVocabulary GamePractice Reading
noun🔗Share빠름, 신속함The state of being fast."The fastness of the internet connection is crucial for online learning. "인터넷 연결의 신속함은 온라인 학습에 매우 중요합니다.qualitybeingChat with AIVocabulary GamePractice Reading
noun🔗Share견뢰도The ability of a dye to withstand fading."The fabric's fastness ensured the colorful school banners would stay vibrant for years. "천의 견뢰도는 다채로운 학교 배너가 수년간 생생하게 유지되도록 보장했습니다.colormaterialtechnicalindustryqualityChat with AIVocabulary GamePractice Reading
