Semimillenary
a. 持续500年的
🗣️ 情景例句
I can't thank you enough for all the work you've done.
对于你所做的一切我真不知道如何感谢你才好。
You can stay as long as you pay the rent on time.
只要你按时交房租，你就能住这儿。
There was a good talk about the increase in the world's population.
有个关于世界人口增长的谈话，很不错。