Two main features of the travel and tourism industry make its economic significance difficult to ascertain.

8.旅游业的两个主要特征使其经济意义难以确定。

Nevertheless, the horse had great ritual and economic significance during the Bronze and Iron Ages, as attested by its depictions on jewellery and other metal objects.

尽管如此， 马在青铜器和铁器时代具有重要的仪式和经济意义，珠宝和其他金属物品上的描绘证明了这一点。