极地

The Antarctic species have few special adaptations for polar life.

的物种地生活几乎没有什么特别的适应性改变。

Polar surface waters most likely will become undersaturated for aragonite before the end of this century.

在本世纪结束前，地海水表层有可能变石不饱和。

In this area the climate changes from cool, humid, and subpolar to the frozen conditions of Antarctica.

这个地区气候变化大，副地气候的凉爽湿润，到的冰天雪地。

The relationship between arctic tropopause height and surface air temperature is discussed by using the aerological sounding and surface data during 1977-1990 in Beijing area.

利用北京地区1977—1990年的高空、地面资料，讨论了地流层顶与地面温度的关系。