两极

• Solar irradiance decreases towards the poles .
  太阳辐照率向两极递减。
• Perfectly normal bipolar embryoids are formed .
  形成完全正常的两极胚状体。
• Meridians are great circles passing through both poles .
  经线均为通过两极。
• latitude reaches a maximum of 90°at the poles.
  两极纬度的最大值为90。
• Extremes meet .
  两极相通。
• Our spinning planet is heated strongly at the equator, feebly at the poles .
  我们这个旋转着的行星在赤道处受热很强烈，而在两极很微弱。
• As a result the earth bulges slightly at the equator and is slightly flattened at the poles .
  结果，地球在赤道上微微凸出，而在两极微微扁平。
• Except at the pole and the equator, a plumb line does not point toward the earth's center .
  除在地球的两极和赤道之外，铅锤线并不指向地球中心。
• Like other planets, mars is not perfectly round; it is flattened at the poles because of its spin .
  像其它行星一样，火星不是十分圆的，由于自转，两极稍偏。
• As the plates are made larger and the distance between them diminished, the fringing becomes relatively less .
  若板的面积增大，而两极间的间距缩小，则边缘相应就较小。