| 1. | The equator is a great circle midway between the north and south poles .
赤道圈是一个位于南北极当中的大圆周。 |
| 2. | The earth ' s axis is the line between the north and south poles
地轴是南北极之间的线 |
| 3. | It ' s where we get our magnetic north pole and south pole ,
正因如此才形成了磁场的南北极 |
| 4. | The earth rotates on an axis between the north and south poles
地球绕南北极之间的轴线自传。 |
| 5. | The midnight sun
南北极午夜的太阳 |
| 6. | This interesting box specially designed to show the ecology of the north and south poles
这个设计独特的箱子展现了南北极的生态系统。 |
| 7. | At the beginning of the 20th century , many explorers were trying to reach the south and north pole
在二十世纪初，许多探险家试图到达南北极。 |
| 8. | We ' re polar opposite as far as our backgrounds are concerned , but we get along incredible well
我们两人的家庭背景，虽如南北极一般的不同，但是我们两人相处得却出奇地融洽。 |
| 9. | This is what will cause the ice caps to melt on both poles and eventually translate into more volcanic activity
这就是导致冰帽在南北极融解的事物，最终将转译成更多的火山活动。 |
| 10. | The greatest event in the polar bear ' s year - the ringed - seal pupping season - is about to begin
地球整体气温不断上升，南北极的大冰块亦比正常椁度融化得快，人类正面临重大危机。 |
