文章列表

• 1.英语听力：自然百科 神奇水世界 Water-8
• society, that first brought civilization to the desert. Far from just scraping by in this harsh landscape, the Garamantes were flourishing. They grew ...
• 2.英语听力：自然百科 神奇水世界 Water-7
• So the rigid hierarchical structure of Egyptian society wasn't just dictated by the Pharaohs. It also emerged because the Egyptians had only one water...
• 3.英语听力：自然百科 神奇水世界 Water-6
• It worked because the water of the river carried something special within it, an almost invisible treasure that was the secret of Egypts economic migh...
• 4.英语听力：自然百科 神奇水世界 Water-5
• What that circulation means to us human is that water is a moving target. We constantly have to seek it out in this endless cycle and intercept it whe...
• 5.英语听力：自然百科 神奇水世界 Water-4
• Let's look first. The fresh water that we depend on begins its life in the oceans. As the sun's rays beat down on the surface of the sea, they heat th...
• 6.英语听力：自然百科 神奇水世界 Water-3
• Out there is a river valley that's been carved into the rock. It's been carved by running water, just flew down here smoothly off this rock bed and th...
• 7.英语听力：自然百科 神奇水世界 Water-2
• The center of the Sahara Desert in North Africa, one of the driest places on earth. I'm over six hours drive from civilization. Temperatures here regu...
• 8.英语听力：自然百科 神奇水世界 Water-1
• Of all our planet's forces, perhaps none has greater power over us than water. For me, water is the most magical force on earth. The presence of water...
• 9.英语听力：自然百科 伯利兹蓝洞
• Why is this diver burrowing into the bottom of this mini lake? She is literally disappearing into the sand and gravel of the waters floor, only debris...
• 10.英语听力：自然百科 宇宙新领域 鲁特西亚真容曝光
• Scientists are likening the new images from a large asteroid to discovery of a new world. Asteroid 21 Lutetia is located between Jupiter and Mars and ...