简介：In the film, which is a part of the NOVA series Secrets of Lost Empires, a team of timber framers anIn the film, which is a part of the NOVA series Secrets of Lost Empires, a team of timber framers and other specialists design, build, and fire a pair of trebuchets, a devastating engine of war popular in the Middle Ages.详情
很羡慕制作组的热情，明明可以靠史料堆积完成一部纪录片，制作组却偏偏纠集了一群实实在在的工程师，自己搭建了一个全比例的投石机，哦不对，是两个，有钱真好。