经久的 meaning in English

durable
time proof
timeproof

When agriculture becomes the chief source of sustenance, the community is still small but assumes a more permanent character .
农业成为主要生存方式以后，社区依然很小，但具有了更经久的性质。
Recognition of the importance if dr . hawkin ' s research may be difficult or impossible for a layman , but it is sure to have a lasting impact on our lives
对一个门外汉来说，要认识霍金博士研究的重要性也许是困难得或不可能的，但它肯定会对我们的生活产生经久的影响。