Bringing a sarsen stone to Stonehenge requires years of planning.

把岩带到是需要常年计划.

Stonehenge was presumed to post-date these structures.

人们认为史前柱要晚于这些结构。

Consisting of concentric circles of stone surrounded by a moat (called a "henge"), Stonehenge was constructed in several stages over thousands of years.

由圆壕沟包围几圈大同心圆块组成，建造持续了数千年时间。

Another form is the menhir, a simple upright stone usually placed with others to form a circle, as at Stonehenge and Avebury in England, or a straight alignment, as at Carnac in France.

另一种形式是史前柱，这是一块与其他直立块放在一起组成一个圆圈直立碑，如英格兰和爱扶倍利，或排成直线，如法国卡尔纳克。