- 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 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.
可是洞里的水不光只是侵蚀 - It also builds.
它们还能造景
and they're still getting bigger 它们仍在不断扩大
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