s. never-ceasing
a. retained; not shed
a. 固执的, 坚持的, 持续的, 作用持久的
[法] 坚持的, 固执的, 持续的
1. She is very persistent in her studies and never gives up.
她在学习上非常坚持，从不放弃。
2. The persistent rain made it difficult to go outside.
持续的雨让外出变得困难。
3. His persistent efforts finally paid off when he got the job.
他坚持不懈的努力终于得到了回报，找到了工作。