perennial
Definition
Lasting for a very long time; enduring or recurring regularly.
中文 持续很长时间的;持久的或定期重复的。
Example
"The conflict has been a perennial issue in the region."
Lasting for a very long time; enduring or recurring regularly.
中文 持续很长时间的;持久的或定期重复的。
"The conflict has been a perennial issue in the region."