文章列表

• 1.英语听力：自然百科 行星旅行指南：火星 Mars—5
• In the four decades since our robots first arrived, the once fuzzy ball at the end of our telescopes has steadily focused into a red planet we can und...
• 2.英语听力：自然百科 行星旅行指南：火星 Mars—4
• Therere some basic things you should know about Mars before leaving home. Most days will be clear, and sunny and cold. The average temperature on Mars...
• 3.英语听力：自然百科 行星旅行指南：火星 Mars—3
• Could life have been forged in the same way on both planets? When we sent the first probe to investigate in the 1960s, almost anything was possible. O...
• 4.英语听力：自然百科 行星旅行指南：火星 Mars—2
• Its been said that the first person on Mars is alive somewhere on earth today. Imagine its you. What do you need to know? How much you get there? What...
• 5.英语听力：自然百科 行星旅行指南：火星 Mars—1
• Have you ever fantasized about going somewhere special? Somewhere far from crowds, off the beaten track. Somewhere out of this world? Is it time to ca...
• 6.英语听力：自然百科 金星和水星旅行指南 Venus and Mercury-19
• Valor will be tackling the acid clouds of Venus with little help from flying pan technology. This being two weather balloons are we watched Venus in t...
• 7.英语听力：自然百科 金星和水星旅行指南 Venus and Mercury-18
• Despite all this scientific effort, we still don't know what triggered Venus' diabolical transformation. People debated over whether Venus ever had a ...
• 8.英语听力：自然百科 金星和水星旅行指南 Venus and Mercury-17
• You never guess the dangers on the ground from orbit, except maybe for this, massive, double-barreled storms hovering above the poles. Of this, what w...
• 9.英语听力：自然百科 金星和水星旅行指南 Venus and Mercury-16
• Congratulations, you've arrived on the hottest surface in the solar system. Here, the official temperature is eight hundred seventy degrees Fahrenheit...
• 10.英语听力：自然百科 金星和水星旅行指南 Venus and Mercury-15
• One of the really exciting and high-level scientific interests is whether Venus is geological active today, because there are reasons to think of the ...