permanency
🇬🇧/ˈpɜːmənənsɪ/ 🇺🇸/ˈpɜːrmənənsi/ 6a person or thing that is permanent 永久的人或事物 the property of being able to exist for an indefinite duration.
noun [抽象名词]永久；耐久性；永久的事物
It was a very cancer for permanency and pain. 这是一种带来永久痛苦的毒瘤。
单词造句:
It was a very cancer for permanency and pain. 这是一种带来永久痛苦的毒瘤。