如何存储一组字符串总是一个经久不衰的话题。
人口城市化是一个由来已久但经久不衰的话题。
Urbanization is a long-standing but flourishing and fadeless topic.
死刑的存废之争在法学界历来是一个经久不衰的话题。
The issue on whether death penalty should be abolished or not has aroused heated and widespread discussions all through the ages.
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