！persistence的形容词是persistent，adj. 执意的，坚持不懈的；持续的，反复出现的；（化学品，放射性）作用持久的，挥发慢的；（动植物某部位，如角、叶等）宿存的，不落的
The improvement in standards has been steady and persistent, but has attracted little comment from educationalists.
坚持不懈；坚持；锲而不舍；持续存在；维持
复数：persistences
1.
Her persistence paid off and she eventually wore me down.
她锲而不舍取得成功，终于使我服输了。
牛津高阶英汉双解词典
2.
It was her sheer persistence that wore them down in the end.
最终把他们拖垮的纯粹是她的不屈不挠。
