Within the defining circular enclosure of a henge can be circles of posts.在石阵围成的圆形区域内可以是一圈一圈的柱子。He was swimming laps in the pool.他正在泳池里一圈一圈地游。Billy will sit and watch his train going round and round on its little track for hours.比利会坐着看他的玩具火车在小轨道上一圈一圈地转，一看就是几个小时。