Nearly 2000 years ago, as the Romans began to pull out of Scotland, they left behind a curious treasure: 10 tons of nails, nearly a million of the things.
近2000年前，当罗马人开始从苏格兰撤军时，他们留下了一件奇特的宝藏：10吨钉子，几乎有百万枚。
Why had the Romans buried a million nails?
为什么罗马人埋葬了一百万枚钉子？
The Romans buried the nails so deep that they would not be discovered for almost two millennia.
罗马人将这些钉子埋得如此之深，以至于它们几乎在两千年之后才被发现。
This was an attempt to recover the valuable nails, which could be reused after sifting the ashes.
这是试图回收那些宝贵的钉子，这些钉子在灰烬中筛过后可以再次使用。
The idea that one might burn down an entire house just to reclaim the nails underlines how scarce, costly and valuable the simple-seeming technology was.
一个人可能会为了回收钉子而烧毁整栋房子的想法，凸显了这种看似简单的技术是多么稀缺、昂贵和有价值。
例句取自历年考研英语真题，翻译为机器生成，仅供学习参考。