| 1. | Over the polar regions we should see aurora .
在极地高空，我们会看到极光。 |
| 2. | Stratification in polar water normally is weak and transient .
极地水域的成层性是微弱而暂时的。 |
| 3. | Stratification in polar waters normally is weak and transient .
极地水域的成层性是微弱而暂时的。 |
| 4. | The photography in the film about arctic wildlife was superb .
那部影片中拍摄的极地野生动物好看极了。 |
| 5. | The first thing you'll see on mars will be one of the polar ice caps .
在火星上你看到的第一件东西是两个极地冰帽中的一个。 |
| 6. | The centrifugal force caused by the earth's rotation decreases from a maximum at the equator to zero at the poles .
地球自转产生的离心力从赤道的最大值降低到极地的零值。 |
| 7. | Noctilucent clouds are ragged extensions of a more widespread and more permanent layer which forms over the summer polar area at the mesopause .
夜光云是在夏季极地中圈顶之上形成的更广泛更持久的层的参差不齐的延伸。 |
| 8. | Liquid water could be thawed to form a polar ocean
液化的水可以融化成极地海洋。 |
| 9. | Adventure on komodo island diving in palau
极地历险系列之勇闯恐岛帛琉猎奇 |
| 10. | 800 horses and 3000 miles of deadly desert
徵召800匹马驰骋大漠跨越3000公里凶险极地 |
