英语翻译
The bronze heads were bought by anonymous bidders over the telephone,but the winning bids on both pieces were taken by the same Christie’s employee,Thomas Seydoux,suggesting that the buyer might be the same person.But Mr.Seydoux said later that he did not know who the buyers were.
这段如何翻译?尤其：but the winning bids on both pieces 后面是什么成份,