Those simultaneous challenges appear less overwhelming with increasingly better answers to a centuries-old question: how to make power portable.

这些同时出现的挑战似乎没有那么势不可挡。对于一个存在了几个世纪的问题——如何让电力变得便携——它们给出了越来越好的答案。

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These include the centuries-old custom of "bul", where leaders would call a temporary stop to fishing for key species in order to give fish stocks an opportunity to replenish.

这些传统包括几个世纪以来被称之为“bul”的旧习俗，领导人会要求暂停捕捞一些重要种类的鱼，给鱼类总储备量繁衍补充的机会。

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Their massive wake creates waves at the bottom of the sea, weakening the foundations of the centuries-old buildings themselves.

它们巨大的尾流在海底形成浪潮，损坏了有数百年历史的建筑本身的地基。

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Additionally, the centuries-old portraits have also watched over some of the most historic events of the 20th Century.

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Everything was relegated to the beauty of the pocket watch, contemporary sculpture and centuries-old mechanics.

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Together, they are ensuring this centuries-old tradition will be passed on to generations to come.

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