cut off from the outside world and from other caves. 与外界及其它洞穴隔绝
which they use as a refuge from predators. 这里是它们躲避天敌的地方
Fresh water from the jungle flows over the heavier salt water from the sea. 咸水来自海洋 比重较重 来自丛林的淡水在其上方流动
Away from the life-giving rays of sunshine 这里远离给予生命的阳光
Since the last Ice Age they've become cut off from the outside world. 自从上一个冰川期以来 它们便已和外界隔绝
so the calcite forms decorations that hang from the ceiling - 方解石形成了悬在洞顶上的装饰物
often more than 60 metres from the floor. 通常高出地面60多米
and using ladders made from forest vines the gatherers climb into the highest reaches of the cave 采集者利用树藤编成的梯子爬到洞穴的最高处
Their little cup-like nests are made entirely from threads of saliva. 它们小巧的杯状燕窝完全由唾液丝筑建
Returning from hunting in the sunlight 完成白天的狩猎工作后