Little did they realise that Lechuguilla would soon be regarded by cavers the world over as the most beautiful of all caves. 不久他们便意识到龙舌兰洞很快就会 被全世界的洞穴专家公认为地球上最美丽的洞穴
when cavers dug through several metres of loose rock 洞穴专家们在松散的岩层中 挖出了一条几十米深的通道
Cavers call such places 'squeezes.' 洞穴专家称之为“瓶颈”