- with virtually no safety equipment
事实上没有任何安全措施 - 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 - often more than 60 metres from the floor.
通常高出地面60多米 - The work may be hazardous in the extreme,
这项工作看起来极度危险 - but the rewards are great.
但却能得到丰厚的回报 - The pure white nests of cave swiftlets
洞金丝燕的纯白燕窝 - are the main ingredient of birds' nest soup
是燕窝羹的主要成分