People set up the sarsens at Stonehenge over 4,000 years ago.

4000年前，人们将撒森岩放置巨石阵上。

But what happened to that core? An employee from the company that helped repair the sarsen held onto it.

那被取出的岩心去哪里了？当时有一家公司为修复萨尔森石提供帮助，正是家公司的一名雇员保留了一块岩心。

Stonehenge was constructed with giant sarsen stones, sandstone blocks that are common in southern England.

建造巨石阵的石材是萨尔森石，种沙石块英南部地区相当常见。

It was similar to sandstone found at West Woods and all but two of the Stonehenge sarsens.

一石块与西伍兹和巨石阵中发现的砂岩相似，只有两个例外。

The largest stones, called sarsens, measure up to 30 feet or 9 meters tall and weigh an average of 25 tons.

其中最大的石头，被称为砂岩残块，据测量有 30 尺，也就是 9 米那么高，平均有 25 吨那么重。

By around 2,500 BC, larger stones had been brought to the site, including giant sarsen stones from North Wiltshire, which could weigh as much as 30 tons.

到公元前 2500 年左右，更大的石头被带到了个地方，包括来自北威尔特郡的巨大萨森石头，重达 30 吨。

Although they are smaller than the massive sarsens, the bluestones still weigh an average of 4 tons each, and archaeologists are baffled as to how they were transported so far without modern technology—or even the wheel!

尽管青石比巨大的砂岩残块要小，但每块仍平均重达 4 吨，考古学家非常疑惑人们是怎样运输了如此远的距离，没有现代工具甚至没有轮子的情况下！

At this point, sandstone slabs – known as 'sarsens' – were arranged into an outer crescent or ring; some were assembled into the iconic three-pieced structures called trilithons that stand tall in the centre of Stonehenge.

此时，砂岩板（称为“sarsens”）被排列成外部新月形或环形；有些被组装成标志性的三块结构，称为“三石”，高高地矗立巨石阵的中心。