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3022 篇文章
So far, more than 350 miles of underwater galleries in the Yucatan have been mapped,
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So far, more than 350 miles of underwater galleries in the Yucatan have been mapped, 人们迄今为止已绘制了350英里的 尤卡坦半岛地下水系图

mapped galleries yucatan underwater than miles more been far of in have the so
roots of giant tropical trees have pushed their way through cracks in the limestone
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roots of giant tropical trees have pushed their way through cracks in the limestone 大型热带树木的根系 却已穿透石灰岩裂缝

cracks roots limestone way through tropical giant pushed trees their of in have the
The cenotes are, in effect, gigantic fresh water wells.
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The cenotes are, in effect, gigantic fresh water wells. 沼穴于是成了巨大的淡水井

wells effect cenotes gigantic fresh water in the are
But in the darkness of the cave tunnels
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But in the darkness of the cave tunnels 但是在黑暗的洞穴通道内

tunnels cave darkness of in the but
Structures like these in North America's Carlsbad Cavern
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Structures like these in North America's Carlsbad Cavern 北美洲卡尔斯巴德溶洞中的这些构造

cavern carlsbad america's structures like these north in
But sometimes the formations in a cave stop growing altogether.
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But sometimes the formations in a cave stop growing altogether. 但有时洞穴内的这些活动会完全停止

altogether stop formations sometimes cave growing in the but a
These flooded caves in Mexico have remained virtually unchanged for thousands of years.
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These flooded caves in Mexico have remained virtually unchanged for thousands of years. 墨西哥的这些水洞 几千年来几乎保持不变

unchanged remained caves mexico flooded thousands virtually these for of in have years
Variations in water flow and the air currents
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Variations in water flow and the air currents 水流和气流的变化

variations flow currents air water in the and
and when it meets the air in the cave
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and when it meets the air in the cave 当它与洞内空气接触时

meets cave air it when in the and
But water in caves doesn't only erode.
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But water in caves doesn't only erode. 可是洞里的水不光只是侵蚀

erode doesn't caves only water in but