So, as long as this valuable harvest is properly controlled, 所以 只要这种利润可观的 采摘行为得到适当控制 the colonies will continue to flourish. 燕群仍旧可以长盛不衰 These Bornean caves are among the biggest in the world 婆罗洲的这些洞窟是世界上最大的洞穴 and they're still getting b...
the colonies will continue to flourish. 燕群仍旧可以长盛不衰 These Bornean caves are among the biggest in the world 婆罗洲的这些洞窟是世界上最大的洞穴 and they're still getting bigger 它们仍在不断扩大 as each year rainwater eats away a little more limestone. 因为每年雨水都会侵蚀掉少...
These Bornean caves are among the biggest in the world 婆罗洲的这些洞窟是世界上最大的洞穴 and they're still getting bigger 它们仍在不断扩大 as each year rainwater eats away a little more limestone. 因为每年雨水都会侵蚀掉少许石灰岩 But water in caves doesn't only erode. 可是洞...
are the main ingredient of birds' nest soup 是燕窝羹的主要成分 and gram for gram are worth as much as silver. 每克燕窝的价值堪比白银 As soon as its nest is removed a bird will immediately build another. 燕窝被摘去后 金丝燕很快又会再吐一个 So, as long as this valuable harve...
and gram for gram are worth as much as silver. 每克燕窝的价值堪比白银 As soon as its nest is removed a bird will immediately build another. 燕窝被摘去后 金丝燕很快又会再吐一个 So, as long as this valuable harvest is properly controlled, 所以 只要这种利润可观的 采摘行为得到适当控制 the col...
As soon as its nest is removed a bird will immediately build another. 燕窝被摘去后 金丝燕很快又会再吐一个 So, as long as this valuable harvest is properly controlled, 所以 只要这种利润可观的 采摘行为得到适当控制 the colonies will continue to flourish. 燕群仍旧可以长盛不衰 These Bornean c...
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 and gram for gram are worth as much as si...
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 and gram for gram are worth as much as silver. 每克燕窝的价值堪比白银 As soon as its nest is removed a bir...
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 and gram for gram are worth as much as silver. 每克燕窝的价值堪比白银 As soon as its nest is removed a bird will immediately build another. 燕窝被摘...
It's a very risky business. 这是一项非常危险的工作 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...