英语翻译

问题描述:

英语翻译
Though,at first,Byrd and his men were able to take a great many photographs of the mountains that lay below,they soon ran into serious trouble.
请从从句的角度分析一下that lay below

Though,at first,Byrd and his men were able to take a great many photographs of the mountains that lay below,they soon ran into serious trouble.虽然一开始,Byrd和他的人可以拍摄到位于下面的这些大山的照片...